12957228894 has 16 divisors (see below), whose sum is σ = 27041173632. Its totient is φ = 4131290328.

The previous prime is 12957228857. The next prime is 12957228919. The reversal of 12957228894 is 49882275921.

It is a super-2 number, since 2×12957228894² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 46946344 + ... + 46946619.

It is an arithmetic number, because the mean of its divisors is an integer number (1690073352).

Almost surely, 2^12957228894 is an apocalyptic number.

12957228894 is an abundant number, since it is smaller than the sum of its proper divisors (14083944738).

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

12957228894 is a wasteful number, since it uses less digits than its factorization.

12957228894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93892991.

The product of its digits is 5806080, while the sum is 57.

The spelling of 12957228894 in words is "twelve billion, nine hundred fifty-seven million, two hundred twenty-eight thousand, eight hundred ninety-four".