309626047964 has 6 divisors (see below), whose sum is σ = 541845583944. Its totient is φ = 154813023980.

The previous prime is 309626047957. The next prime is 309626047987. The reversal of 309626047964 is 469740626903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38703255992 + ... + 38703255999.

It is an arithmetic number, because the mean of its divisors is an integer number (90307597324).

Almost surely, 2^309626047964 is an apocalyptic number.

It is an amenable number.

309626047964 is a deficient number, since it is larger than the sum of its proper divisors (232219535980).

309626047964 is a wasteful number, since it uses less digits than its factorization.

309626047964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77406511995 (or 77406511993 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 56.

The spelling of 309626047964 in words is "three hundred nine billion, six hundred twenty-six million, forty-seven thousand, nine hundred sixty-four".