12610515540 has 72 divisors (see below), whose sum is σ = 41074260192. Its totient is φ = 2882402880.

The previous prime is 12610515377. The next prime is 12610515559. The reversal of 12610515540 is 4551501621.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12610515498 and 12610515507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2141706 + ... + 2147585.

It is an arithmetic number, because the mean of its divisors is an integer number (570475836).

Almost surely, 2^12610515540 is an apocalyptic number.

12610515540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12610515540 is an abundant number, since it is smaller than the sum of its proper divisors (28463744652).

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

12610515540 is a wasteful number, since it uses less digits than its factorization.

12610515540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4289317 (or 4289308 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 12610515540 in words is "twelve billion, six hundred ten million, five hundred fifteen thousand, five hundred forty".