78526374856 has 32 divisors (see below), whose sum is σ = 148401950400. Its totient is φ = 38952688320.

The previous prime is 78526374811. The next prime is 78526374869. The reversal of 78526374856 is 65847362587.

It is a junction number, because it is equal to n+sod(n) for n = 78526374794 and 78526374803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4878790 + ... + 4894858.

It is an arithmetic number, because the mean of its divisors is an integer number (4637560950).

Almost surely, 2^78526374856 is an apocalyptic number.

It is an amenable number.

78526374856 is a deficient number, since it is larger than the sum of its proper divisors (69875575544).

78526374856 is a wasteful number, since it uses less digits than its factorization.

78526374856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20869 (or 20865 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 61.

The spelling of 78526374856 in words is "seventy-eight billion, five hundred twenty-six million, three hundred seventy-four thousand, eight hundred fifty-six".