12565545034 has 16 divisors (see below), whose sum is σ = 21999253248. Its totient is φ = 5270653872.

The previous prime is 12565545029. The next prime is 12565545073. The reversal of 12565545034 is 43054556521.

It is a super-2 number, since 2×12565545034² (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, 9547629 + ... + 9548944.

It is an arithmetic number, because the mean of its divisors is an integer number (1374953328).

Almost surely, 2^12565545034 is an apocalyptic number.

12565545034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12565545034 is a deficient number, since it is larger than the sum of its proper divisors (9433708214).

12565545034 is a wasteful number, since it uses less digits than its factorization.

12565545034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19096629.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 12565545034 in words is "twelve billion, five hundred sixty-five million, five hundred forty-five thousand, thirty-four".