20265702664 has 32 divisors (see below), whose sum is σ = 39443155200. Its totient is φ = 9751181760.

The previous prime is 20265702659. The next prime is 20265702679. The reversal of 20265702664 is 46620756202.

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, 183867 + ... + 272650.

It is an arithmetic number, because the mean of its divisors is an integer number (1232598600).

Almost surely, 2^20265702664 is an apocalyptic number.

It is an amenable number.

20265702664 is a deficient number, since it is larger than the sum of its proper divisors (19177452536).

20265702664 is a wasteful number, since it uses less digits than its factorization.

20265702664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456733 (or 456729 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 20265702664 in words is "twenty billion, two hundred sixty-five million, seven hundred two thousand, six hundred sixty-four".