12530501555 has 32 divisors (see below), whose sum is σ = 17794461888. Its totient is φ = 8350617600.

The previous prime is 12530501551. The next prime is 12530501587. The reversal of 12530501555 is 55510503521.

It is not a de Polignac number, because 12530501555 - 2² = 12530501551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12530501551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33995 + ... + 161915.

It is an arithmetic number, because the mean of its divisors is an integer number (556076934).

Almost surely, 2^12530501555 is an apocalyptic number.

12530501555 is a deficient number, since it is larger than the sum of its proper divisors (5263960333).

12530501555 is a wasteful number, since it uses less digits than its factorization.

12530501555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128087.

The product of its (nonzero) digits is 18750, while the sum is 32.

The spelling of 12530501555 in words is "twelve billion, five hundred thirty million, five hundred one thousand, five hundred fifty-five".