20986031937 has 16 divisors (see below), whose sum is σ = 30276615488. Its totient is φ = 12853270080.

The previous prime is 20986031921. The next prime is 20986031959. The reversal of 20986031937 is 73913068902.

It is not a de Polignac number, because 20986031937 - 2⁴ = 20986031921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20986031987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1266898 + ... + 1283355.

It is an arithmetic number, because the mean of its divisors is an integer number (1892288468).

Almost surely, 2^20986031937 is an apocalyptic number.

It is an amenable number.

20986031937 is a deficient number, since it is larger than the sum of its proper divisors (9290583551).

20986031937 is a wasteful number, since it uses less digits than its factorization.

20986031937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550480.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 20986031937 in words is "twenty billion, nine hundred eighty-six million, thirty-one thousand, nine hundred thirty-seven".