78000681451 has 24 divisors (see below), whose sum is σ = 98040649952. Its totient is φ = 60744816000.

The previous prime is 78000681397. The next prime is 78000681469. The reversal of 78000681451 is 15418600087.

It is not a de Polignac number, because 78000681451 - 2¹⁵ = 78000648683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78000601451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1499881 + ... + 1551013.

Almost surely, 2^78000681451 is an apocalyptic number.

78000681451 is a deficient number, since it is larger than the sum of its proper divisors (20039968501).

78000681451 is a wasteful number, since it uses less digits than its factorization.

78000681451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52963 (or 52952 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 78000681451 in words is "seventy-eight billion, six hundred eighty-one thousand, four hundred fifty-one".