12502638775 has 24 divisors (see below), whose sum is σ = 17495866800. Its totient is φ = 8779276800.

The previous prime is 12502638767. The next prime is 12502638779. The reversal of 12502638775 is 57783620521.

It is not a de Polignac number, because 12502638775 - 2³ = 12502638767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12502638779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 775890 + ... + 791839.

It is an arithmetic number, because the mean of its divisors is an integer number (728994450).

Almost surely, 2^12502638775 is an apocalyptic number.

12502638775 is a deficient number, since it is larger than the sum of its proper divisors (4993228025).

12502638775 is a wasteful number, since it uses less digits than its factorization.

12502638775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567779 (or 1567774 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 12502638775 in words is "twelve billion, five hundred two million, six hundred thirty-eight thousand, seven hundred seventy-five".