12664540254 has 16 divisors (see below), whose sum is σ = 25744312080. Its totient is φ = 4152308160.

The previous prime is 12664540253. The next prime is 12664540271. The reversal of 12664540254 is 45204546621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664540253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17300919 + ... + 17301650.

It is an arithmetic number, because the mean of its divisors is an integer number (1609019505).

Almost surely, 2^12664540254 is an apocalyptic number.

12664540254 is an abundant number, since it is smaller than the sum of its proper divisors (13079771826).

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

12664540254 is a wasteful number, since it uses less digits than its factorization.

12664540254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34602635.

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 12664540254 in words is "twelve billion, six hundred sixty-four million, five hundred forty thousand, two hundred fifty-four".