12538052530 has 16 divisors (see below), whose sum is σ = 22576942080. Its totient is φ = 5013343792.

The previous prime is 12538052503. The next prime is 12538052561. The reversal of 12538052530 is 3525083521.

It is a super-2 number, since 2×12538052530² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206440 + ... + 260179.

It is an arithmetic number, because the mean of its divisors is an integer number (1411058880).

Almost surely, 2^12538052530 is an apocalyptic number.

12538052530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12538052530 is a deficient number, since it is larger than the sum of its proper divisors (10038889550).

12538052530 is a wasteful number, since it uses less digits than its factorization.

12538052530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469313.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 12538052530 in words is "twelve billion, five hundred thirty-eight million, fifty-two thousand, five hundred thirty".