20264686624 has 48 divisors (see below), whose sum is σ = 49102901568. Its totient is φ = 8016797952.

The previous prime is 20264686499. The next prime is 20264686661. The reversal of 20264686624 is 42668646202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3476602 + ... + 3482425.

It is an arithmetic number, because the mean of its divisors is an integer number (1022977116).

Almost surely, 2^20264686624 is an apocalyptic number.

It is an amenable number.

20264686624 is an abundant number, since it is smaller than the sum of its proper divisors (28838214944).

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

20264686624 is a wasteful number, since it uses less digits than its factorization.

20264686624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959057 (or 6959049 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 20264686624 in words is "twenty billion, two hundred sixty-four million, six hundred eighty-six thousand, six hundred twenty-four".