78510578340536 has 16 divisors (see below), whose sum is σ = 147207785478840. Its totient is φ = 39255168879520.

The previous prime is 78510578340487. The next prime is 78510578340547. The reversal of 78510578340536 is 63504387501587.

It is a super-2 number, since 2×78510578340536² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12231710 + ... + 17511021.

Almost surely, 2^{78510578340536} is an apocalyptic number.

It is an amenable number.

78510578340536 is a deficient number, since it is larger than the sum of its proper divisors (68697207138304).

78510578340536 is a wasteful number, since it uses less digits than its factorization.

78510578340536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30072694 (or 30072690 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 62.

The spelling of 78510578340536 in words is "seventy-eight trillion, five hundred ten billion, five hundred seventy-eight million, three hundred forty thousand, five hundred thirty-six".