20831807151 has 8 divisors (see below), whose sum is σ = 30861936560. Its totient is φ = 13887871416.

The previous prime is 20831807141. The next prime is 20831807167. The reversal of 20831807151 is 15170813802.

It is not a de Polignac number, because 20831807151 - 2⁷ = 20831807023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20831807141) 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 7 ways as a sum of consecutive naturals, for example, 385774180 + ... + 385774233.

It is an arithmetic number, because the mean of its divisors is an integer number (3857742070).

Almost surely, 2^20831807151 is an apocalyptic number.

20831807151 is a deficient number, since it is larger than the sum of its proper divisors (10030129409).

20831807151 is an equidigital number, since it uses as much as digits as its factorization.

20831807151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771548422 (or 771548416 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The spelling of 20831807151 in words is "twenty billion, eight hundred thirty-one million, eight hundred seven thousand, one hundred fifty-one".