20939211402 has 32 divisors (see below), whose sum is σ = 44092192320. Its totient is φ = 6610936320.

The previous prime is 20939211401. The next prime is 20939211481. The reversal of 20939211402 is 20411293902.

20939211402 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (20939211401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 582298 + ... + 617210.

It is an arithmetic number, because the mean of its divisors is an integer number (1377881010).

Almost surely, 2^20939211402 is an apocalyptic number.

20939211402 is an abundant number, since it is smaller than the sum of its proper divisors (23152980918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20939211402 is a wasteful number, since it uses less digits than its factorization.

20939211402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40198.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 20939211402 in words is "twenty billion, nine hundred thirty-nine million, two hundred eleven thousand, four hundred two".