78609523290 has 16 divisors (see below), whose sum is σ = 188662855968. Its totient is φ = 20962539536.

The previous prime is 78609523277. The next prime is 78609523337. The reversal of 78609523290 is 9232590687.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1310158692 + ... + 1310158751.

It is an arithmetic number, because the mean of its divisors is an integer number (11791428498).

Almost surely, 2^78609523290 is an apocalyptic number.

78609523290 is an abundant number, since it is smaller than the sum of its proper divisors (110053332678).

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

78609523290 is a wasteful number, since it uses less digits than its factorization.

78609523290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620317453.

The product of its (nonzero) digits is 1632960, while the sum is 51.

The spelling of 78609523290 in words is "seventy-eight billion, six hundred nine million, five hundred twenty-three thousand, two hundred ninety".