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68807207650896 = 2432111323214094483
BaseRepresentation
bin11111010010100011011010…
…01010111000011001010000
3100000121220102121101021002100
433221101231022320121100
533004314130124312041
6402201332251520400
720331104514660321
oct1751215512703120
9300556377337070
1068807207650896
111aa18a77a11910
12787336a759100
132c5165175a7b0
1412dc4026ac448
157e4c779906b6
hex3e946d2b8650

68807207650896 has 720 divisors, whose sum is σ = 236714126201280. Its totient is φ = 18392785551360.

The previous prime is 68807207650889. The next prime is 68807207650901. The reversal of 68807207650896 is 69805670270886.

68807207650896 is a `hidden beast` number, since 6 + 8 + 8 + 0 + 7 + 20 + 7 + 6 + 508 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 15348471471 + ... + 15348475953.

It is an arithmetic number, because the mean of its divisors is an integer number (328769619724).

Almost surely, 268807207650896 is an apocalyptic number.

68807207650896 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68807207650896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118357063100640).

68807207650896 is an abundant number, since it is smaller than the sum of its proper divisors (167906918550384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68807207650896 is a wasteful number, since it uses less digits than its factorization.

68807207650896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5976 (or 5944 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 72.

The spelling of 68807207650896 in words is "sixty-eight trillion, eight hundred seven billion, two hundred seven million, six hundred fifty thousand, eight hundred ninety-six".