79525420390 has 32 divisors (see below), whose sum is σ = 157065604416. Its totient is φ = 28809206400.

The previous prime is 79525420369. The next prime is 79525420459. The reversal of 79525420390 is 9302452597.

It is a self number, because there is not a number n which added to its sum of digits gives 79525420390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5764186 + ... + 5777965.

It is an arithmetic number, because the mean of its divisors is an integer number (4908300138).

Almost surely, 2^79525420390 is an apocalyptic number.

79525420390 is a deficient number, since it is larger than the sum of its proper divisors (77540184026).

79525420390 is a wasteful number, since it uses less digits than its factorization.

79525420390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11542224.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 79525420390 in words is "seventy-nine billion, five hundred twenty-five million, four hundred twenty thousand, three hundred ninety".