20934864902 has 32 divisors (see below), whose sum is σ = 36155434752. Its totient is φ = 8905456224.

The previous prime is 20934864887. The next prime is 20934864919. The reversal of 20934864902 is 20946843902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1881668 + ... + 1892760.

It is an arithmetic number, because the mean of its divisors is an integer number (1129857336).

Almost surely, 2^20934864902 is an apocalyptic number.

20934864902 is a deficient number, since it is larger than the sum of its proper divisors (15220569850).

20934864902 is a wasteful number, since it uses less digits than its factorization.

20934864902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12092.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 20934864902 in words is "twenty billion, nine hundred thirty-four million, eight hundred sixty-four thousand, nine hundred two".