12526647775 has 12 divisors (see below), whose sum is σ = 15544789792. Its totient is φ = 10013739840.

The previous prime is 12526647737. The next prime is 12526647779. The reversal of 12526647775 is 57774662521.

It is not a de Polignac number, because 12526647775 - 2¹¹ = 12526645727 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12526647779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155622 + ... + 221971.

Almost surely, 2^12526647775 is an apocalyptic number.

12526647775 is a deficient number, since it is larger than the sum of its proper divisors (3018142017).

12526647775 is a wasteful number, since it uses less digits than its factorization.

12526647775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378930 (or 378925 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 52.

The spelling of 12526647775 in words is "twelve billion, five hundred twenty-six million, six hundred forty-seven thousand, seven hundred seventy-five".