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68707102464 = 283271113313
BaseRepresentation
bin111111111111010000…
…110010111100000000
320120100022112102212200
4333333100302330000
52111203004234324
651321423353200
74651424510040
oct777720627400
9216308472780
1068707102464
1127158406010
1211395a52800
13662c628420
14347b023720
151bc1d74ec9
hexfff432f00

68707102464 has 864 divisors, whose sum is σ = 274845462528. Its totient is φ = 15941836800.

The previous prime is 68707102459. The next prime is 68707102469. The reversal of 68707102464 is 46420170786.

68707102464 is a `hidden beast` number, since 6 + 87 + 0 + 7 + 102 + 464 = 666.

It is an interprime number because it is at equal distance from previous prime (68707102459) and next prime (68707102469).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68707102469) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2216358129 + ... + 2216358159.

Almost surely, 268707102464 is an apocalyptic number.

68707102464 is a gapful number since it is divisible by the number (64) 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 68707102464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137422731264).

68707102464 is an abundant number, since it is smaller than the sum of its proper divisors (206138360064).

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

68707102464 is a wasteful number, since it uses less digits than its factorization.

68707102464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

It can be divided in two parts, 68707 and 102464, that added together give a palindrome (171171).

The spelling of 68707102464 in words is "sixty-eight billion, seven hundred seven million, one hundred two thousand, four hundred sixty-four".