20922559516 has 12 divisors (see below), whose sum is σ = 36620831520. Its totient is φ = 10459464800.

The previous prime is 20922559499. The next prime is 20922559613. The reversal of 20922559516 is 61595522902.

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, 427636 + ... + 474043.

It is an arithmetic number, because the mean of its divisors is an integer number (3051735960).

Almost surely, 2^20922559516 is an apocalyptic number.

It is an amenable number.

20922559516 is a deficient number, since it is larger than the sum of its proper divisors (15698272004).

20922559516 is a wasteful number, since it uses less digits than its factorization.

20922559516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907484 (or 907482 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 46.

The spelling of 20922559516 in words is "twenty billion, nine hundred twenty-two million, five hundred fifty-nine thousand, five hundred sixteen".