79290039650 has 24 divisors (see below), whose sum is σ = 147487248084. Its totient is φ = 31714344000.

The previous prime is 79290039641. The next prime is 79290039679. The reversal of 79290039650 is 5693009297.

It can be written as a sum of positive squares in 6 ways, for example, as 2116644049 + 77173395601 = 46007^2 + 277801^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

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, 1427804 + ... + 1482296.

Almost surely, 2^79290039650 is an apocalyptic number.

79290039650 is a deficient number, since it is larger than the sum of its proper divisors (68197208434).

79290039650 is a wasteful number, since it uses less digits than its factorization.

79290039650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83606 (or 83601 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 50.

The spelling of 79290039650 in words is "seventy-nine billion, two hundred ninety million, thirty-nine thousand, six hundred fifty".