78251817006045 has 96 divisors (see below), whose sum is σ = 139917467289600. Its totient is φ = 40434057861120.

The previous prime is 78251817006037. The next prime is 78251817006073. The reversal of 78251817006045 is 54060071815287.

78251817006045 is a `hidden beast` number, since 7 + 8 + 2 + 5 + 18 + 17 + 0 + 0 + 604 + 5 = 666.

It is not a de Polignac number, because 78251817006045 - 2³ = 78251817006037 is a prime.

It is a super-2 number, since 2×78251817006045² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78251817005982 and 78251817006000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 128681829 + ... + 129288501.

It is an arithmetic number, because the mean of its divisors is an integer number (1457473617600).

Almost surely, 2^{78251817006045} is an apocalyptic number.

It is an amenable number.

78251817006045 is a deficient number, since it is larger than the sum of its proper divisors (61665650283555).

78251817006045 is a wasteful number, since it uses less digits than its factorization.

78251817006045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607267 (or 607264 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 54.

The spelling of 78251817006045 in words is "seventy-eight trillion, two hundred fifty-one billion, eight hundred seventeen million, six thousand, forty-five".