78509586970 has 8 divisors (see below), whose sum is σ = 141317256564. Its totient is φ = 31403834784.

The previous prime is 78509586941. The next prime is 78509587003. The reversal of 78509586970 is 7968590587.

It can be written as a sum of positive squares in 2 ways, for example, as 63922503241 + 14587083729 = 252829^2 + 120777^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 3925479339 + ... + 3925479358.

Almost surely, 2^78509586970 is an apocalyptic number.

78509586970 is a deficient number, since it is larger than the sum of its proper divisors (62807669594).

78509586970 is a wasteful number, since it uses less digits than its factorization.

78509586970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7850958704.

The product of its (nonzero) digits is 38102400, while the sum is 64.

The spelling of 78509586970 in words is "seventy-eight billion, five hundred nine million, five hundred eighty-six thousand, nine hundred seventy".