78940055055065 has 32 divisors (see below), whose sum is σ = 97859643678720. Its totient is φ = 61091166822400.

The previous prime is 78940055055061. The next prime is 78940055055133. The reversal of 78940055055065 is 56055055004987.

It is not a de Polignac number, because 78940055055065 - 2² = 78940055055061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78940055054995 and 78940055055013.

It is not an unprimeable number, because it can be changed into a prime (78940055055061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31474856 + ... + 33890214.

It is an arithmetic number, because the mean of its divisors is an integer number (3058113864960).

Almost surely, 2^{78940055055065} is an apocalyptic number.

It is an amenable number.

78940055055065 is a deficient number, since it is larger than the sum of its proper divisors (18919588623655).

78940055055065 is a wasteful number, since it uses less digits than its factorization.

78940055055065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2416753.

The product of its (nonzero) digits is 37800000, while the sum is 59.

The spelling of 78940055055065 in words is "seventy-eight trillion, nine hundred forty billion, fifty-five million, fifty-five thousand, sixty-five".