12540511412 has 96 divisors (see below), whose sum is σ = 27323654400. Its totient is φ = 4956134400.

The previous prime is 12540511411. The next prime is 12540511481. The reversal of 12540511412 is 21411504521.

It is a happy number.

12540511412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12540511411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 670889 + ... + 689327.

It is an arithmetic number, because the mean of its divisors is an integer number (284621400).

Almost surely, 2^12540511412 is an apocalyptic number.

It is an amenable number.

12540511412 is an abundant number, since it is smaller than the sum of its proper divisors (14783142988).

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

12540511412 is a wasteful number, since it uses less digits than its factorization.

12540511412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18537 (or 18535 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 12540511412 in words is "twelve billion, five hundred forty million, five hundred eleven thousand, four hundred twelve".