78070967820 has 36 divisors (see below), whose sum is σ = 236815269600. Its totient is φ = 20818924704.

The previous prime is 78070967797. The next prime is 78070967851. The reversal of 78070967820 is 2876907087.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216863620 + ... + 216863979.

Almost surely, 2^78070967820 is an apocalyptic number.

It is an amenable number.

78070967820 is an abundant number, since it is smaller than the sum of its proper divisors (158744301780).

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

78070967820 is a wasteful number, since it uses less digits than its factorization.

78070967820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433727614 (or 433727609 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 78070967820 in words is "seventy-eight billion, seventy million, nine hundred sixty-seven thousand, eight hundred twenty".