20938193912 has 16 divisors (see below), whose sum is σ = 39334474800. Its totient is φ = 10449000640.

The previous prime is 20938193897. The next prime is 20938193929. The reversal of 20938193912 is 21939183902.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2507612 + ... + 2515947.

It is an arithmetic number, because the mean of its divisors is an integer number (2458404675).

Almost surely, 2^20938193912 is an apocalyptic number.

It is an amenable number.

20938193912 is a deficient number, since it is larger than the sum of its proper divisors (18396280888).

20938193912 is a wasteful number, since it uses less digits than its factorization.

20938193912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024086 (or 5024082 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 20938193912 in words is "twenty billion, nine hundred thirty-eight million, one hundred ninety-three thousand, nine hundred twelve".