12565962624 has 128 divisors (see below), whose sum is σ = 36561002400. Its totient is φ = 3806265344.

The previous prime is 12565962601. The next prime is 12565962631. The reversal of 12565962624 is 42626956521.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156124 + ... + 222500.

Almost surely, 2^12565962624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12565962624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18280501200).

12565962624 is an abundant number, since it is smaller than the sum of its proper divisors (23995039776).

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

12565962624 is a wasteful number, since it uses less digits than its factorization.

12565962624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66440 (or 66428 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 48.

The spelling of 12565962624 in words is "twelve billion, five hundred sixty-five million, nine hundred sixty-two thousand, six hundred twenty-four".