12534413720 has 32 divisors (see below), whose sum is σ = 28493186400. Its totient is φ = 4962075648.

The previous prime is 12534413713. The next prime is 12534413729. The reversal of 12534413720 is 2731443521.

It is a super-2 number, since 2×12534413720² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12534413729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1611380 + ... + 1619139.

It is an arithmetic number, because the mean of its divisors is an integer number (890412075).

Almost surely, 2^12534413720 is an apocalyptic number.

12534413720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12534413720 is an abundant number, since it is smaller than the sum of its proper divisors (15958772680).

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

12534413720 is a wasteful number, since it uses less digits than its factorization.

12534413720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230627 (or 3230623 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 12534413720 in words is "twelve billion, five hundred thirty-four million, four hundred thirteen thousand, seven hundred twenty".