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68716396476 = 22327132343127167
BaseRepresentation
bin111111111111110100…
…001111111110111100
320120100222000121212100
4333333310033332330
52111212344141401
651322354505100
74651566506220
oct777764177674
9216328017770
1068716396476
1127162683812
1211398b95190
136631530840
14347c362780
151bc2aadb86
hexfffd0ffbc

68716396476 has 576 divisors, whose sum is σ = 231442219008. Its totient is φ = 16697995776.

The previous prime is 68716396471. The next prime is 68716396517. The reversal of 68716396476 is 67469361786.

68716396476 is a `hidden beast` number, since 6 + 8 + 71 + 6 + 3 + 96 + 476 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68716396471) 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, 411475345 + ... + 411475511.

It is an arithmetic number, because the mean of its divisors is an integer number (401809408).

Almost surely, 268716396476 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 68716396476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115721109504).

68716396476 is an abundant number, since it is smaller than the sum of its proper divisors (162725822532).

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

68716396476 is a wasteful number, since it uses less digits than its factorization.

68716396476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 385 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 63.

The spelling of 68716396476 in words is "sixty-eight billion, seven hundred sixteen million, three hundred ninety-six thousand, four hundred seventy-six".