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68295715488 = 253372111329389
BaseRepresentation
bin111111100110101111…
…011110101010100000
320112021122102211001000
4333212233132222200
52104332200343423
651212530112000
74635301001100
oct774657365240
9215248384030
1068295715488
1126a67172980
12112a011b600
13659532ab90
14343c537200
151b9abb2843
hexfe6bdeaa0

68295715488 has 1152 divisors, whose sum is σ = 282338784000. Its totient is φ = 15769313280.

The previous prime is 68295715471. The next prime is 68295715489. The reversal of 68295715488 is 88451759286.

68295715488 is a `hidden beast` number, since 6 + 8 + 2 + 9 + 571 + 54 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (68295715489) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 175567198 + ... + 175567586.

It is an arithmetic number, because the mean of its divisors is an integer number (245085750).

Almost surely, 268295715488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68295715488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141169392000).

68295715488 is an abundant number, since it is smaller than the sum of its proper divisors (214043068512).

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

68295715488 is a wasteful number, since it uses less digits than its factorization.

68295715488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 454 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 63.

The spelling of 68295715488 in words is "sixty-eight billion, two hundred ninety-five million, seven hundred fifteen thousand, four hundred eighty-eight".