20577562328 has 16 divisors (see below), whose sum is σ = 38604547080. Its totient is φ = 10283016448.

The previous prime is 20577562309. The next prime is 20577562339. The reversal of 20577562328 is 82326577502.

It is a congruent number.

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, 705401 + ... + 733992.

Almost surely, 2^20577562328 is an apocalyptic number.

It is an amenable number.

20577562328 is a deficient number, since it is larger than the sum of its proper divisors (18026984752).

20577562328 is a wasteful number, since it uses less digits than its factorization.

20577562328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441186 (or 1441182 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 20577562328 in words is "twenty billion, five hundred seventy-seven million, five hundred sixty-two thousand, three hundred twenty-eight".