12534520451 has 16 divisors (see below), whose sum is σ = 13196494080. Its totient is φ = 11889976320.

The previous prime is 12534520417. The next prime is 12534520469. The reversal of 12534520451 is 15402543521.

It is a cyclic number.

It is not a de Polignac number, because 12534520451 - 2¹⁰ = 12534519427 is a prime.

It is a super-2 number, since 2×12534520451² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12534520051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3956270 + ... + 3959436.

It is an arithmetic number, because the mean of its divisors is an integer number (824780880).

Almost surely, 2^12534520451 is an apocalyptic number.

12534520451 is a deficient number, since it is larger than the sum of its proper divisors (661973629).

12534520451 is a wasteful number, since it uses less digits than its factorization.

12534520451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5854.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 12534520451 in words is "twelve billion, five hundred thirty-four million, five hundred twenty thousand, four hundred fifty-one".