80651386368 has 800 divisors, whose sum is σ = 294322305024. Its totient is φ = 21488467968.

The previous prime is 80651386351. The next prime is 80651386397. The reversal of 80651386368 is 86368315608.

80651386368 is a `hidden beast` number, since 8 + 0 + 6 + 513 + 8 + 63 + 68 = 666.

It is a super-2 number, since 2×80651386368² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 313818496 + ... + 313818752.

Almost surely, 2^80651386368 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 80651386368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147161152512).

80651386368 is an abundant number, since it is smaller than the sum of its proper divisors (213670918656).

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

80651386368 is a wasteful number, since it uses less digits than its factorization.

80651386368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 80651386368 in words is "eighty billion, six hundred fifty-one million, three hundred eighty-six thousand, three hundred sixty-eight".