12890415140 has 24 divisors (see below), whose sum is σ = 27580626360. Its totient is φ = 5058879488.

The previous prime is 12890415137. The next prime is 12890415143. The reversal of 12890415140 is 4151409821.

It is an interprime number because it is at equal distance from previous prime (12890415137) and next prime (12890415143).

It can be written as a sum of positive squares in 4 ways, for example, as 6857164864 + 6033250276 = 82808^2 + 77674^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12890415140.

It is not an unprimeable number, because it can be changed into a prime (12890415143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6079325 + ... + 6081444.

It is an arithmetic number, because the mean of its divisors is an integer number (1149192765).

Almost surely, 2^12890415140 is an apocalyptic number.

12890415140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12890415140 is an abundant number, since it is smaller than the sum of its proper divisors (14690211220).

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

12890415140 is a wasteful number, since it uses less digits than its factorization.

12890415140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12160831 (or 12160829 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 12890415140 in words is "twelve billion, eight hundred ninety million, four hundred fifteen thousand, one hundred forty".