78978035364 has 12 divisors (see below), whose sum is σ = 184282082544. Its totient is φ = 26326011784.

The previous prime is 78978035333. The next prime is 78978035369. The reversal of 78978035364 is 46353087987.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×78978035364² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78978035298 and 78978035307.

It is not an unprimeable number, because it can be changed into a prime (78978035369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3290751462 + ... + 3290751485.

It is an arithmetic number, because the mean of its divisors is an integer number (15356840212).

Almost surely, 2^78978035364 is an apocalyptic number.

It is an amenable number.

78978035364 is an abundant number, since it is smaller than the sum of its proper divisors (105304047180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78978035364 is a wasteful number, since it uses less digits than its factorization.

78978035364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6581502954 (or 6581502952 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 78978035364 in words is "seventy-eight billion, nine hundred seventy-eight million, thirty-five thousand, three hundred sixty-four".