12907918971 has 8 divisors (see below), whose sum is σ = 19122842960. Its totient is φ = 8605279296.

The previous prime is 12907918951. The next prime is 12907918997. The reversal of 12907918971 is 17981970921.

It is not a de Polignac number, because 12907918971 - 2¹⁵ = 12907886203 is a prime.

It is a super-2 number, since 2×12907918971² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12907918921) 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, 239035510 + ... + 239035563.

It is an arithmetic number, because the mean of its divisors is an integer number (2390355370).

Almost surely, 2^12907918971 is an apocalyptic number.

12907918971 is a deficient number, since it is larger than the sum of its proper divisors (6214923989).

12907918971 is an equidigital number, since it uses as much as digits as its factorization.

12907918971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478071082 (or 478071076 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 54.

The spelling of 12907918971 in words is "twelve billion, nine hundred seven million, nine hundred eighteen thousand, nine hundred seventy-one".