12913901540 has 48 divisors (see below), whose sum is σ = 28311558912. Its totient is φ = 4938654336.

The previous prime is 12913901537. The next prime is 12913901593. The reversal of 12913901540 is 4510931921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12913901540.

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 15 ways as a sum of consecutive naturals, for example, 1226177 + ... + 1236663.

It is an arithmetic number, because the mean of its divisors is an integer number (589824144).

Almost surely, 2^12913901540 is an apocalyptic number.

12913901540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12913901540 is an abundant number, since it is smaller than the sum of its proper divisors (15397657372).

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

12913901540 is a wasteful number, since it uses less digits than its factorization.

12913901540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13196 (or 13194 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 12913901540 in words is "twelve billion, nine hundred thirteen million, nine hundred one thousand, five hundred forty".