12889403772 has 24 divisors (see below), whose sum is σ = 34371743616. Its totient is φ = 3682686768.

The previous prime is 12889403767. The next prime is 12889403777. The reversal of 12889403772 is 27730498821.

It is an interprime number because it is at equal distance from previous prime (12889403767) and next prime (12889403777).

It is a super-2 number, since 2×12889403772² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12889403777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76722558 + ... + 76722725.

It is an arithmetic number, because the mean of its divisors is an integer number (1432155984).

Almost surely, 2^12889403772 is an apocalyptic number.

12889403772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12889403772 is an abundant number, since it is smaller than the sum of its proper divisors (21482339844).

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

12889403772 is a wasteful number, since it uses less digits than its factorization.

12889403772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153445297 (or 153445295 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 12889403772 in words is "twelve billion, eight hundred eighty-nine million, four hundred three thousand, seven hundred seventy-two".