20943908372 has 12 divisors (see below), whose sum is σ = 36662826816. Its totient is φ = 10468815000.

The previous prime is 20943908347. The next prime is 20943908383. The reversal of 20943908372 is 27380934902.

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, 769754 + ... + 796497.

It is an arithmetic number, because the mean of its divisors is an integer number (3055235568).

Almost surely, 2^20943908372 is an apocalyptic number.

It is an amenable number.

20943908372 is a deficient number, since it is larger than the sum of its proper divisors (15718918444).

20943908372 is a wasteful number, since it uses less digits than its factorization.

20943908372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1569598 (or 1569596 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 20943908372 in words is "twenty billion, nine hundred forty-three million, nine hundred eight thousand, three hundred seventy-two".