78581020747713 has 64 divisors (see below), whose sum is σ = 118974469054464. Its totient is φ = 45703464768000.

The previous prime is 78581020747687. The next prime is 78581020747717. The reversal of 78581020747713 is 31774702018587.

It is not a de Polignac number, because 78581020747713 - 2⁸ = 78581020747457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78581020747717) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 131584170 + ... + 132180012.

It is an arithmetic number, because the mean of its divisors is an integer number (1858976078976).

Almost surely, 2^{78581020747713} is an apocalyptic number.

It is an amenable number.

78581020747713 is a deficient number, since it is larger than the sum of its proper divisors (40393448306751).

78581020747713 is a wasteful number, since it uses less digits than its factorization.

78581020747713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596966.

The product of its (nonzero) digits is 18439680, while the sum is 60.

The spelling of 78581020747713 in words is "seventy-eight trillion, five hundred eighty-one billion, twenty million, seven hundred forty-seven thousand, seven hundred thirteen".