12564458654 has 16 divisors (see below), whose sum is σ = 20578371840. Its totient is φ = 5706020760.

The previous prime is 12564458633. The next prime is 12564458657. The reversal of 12564458654 is 45685446521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12564458657) 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, 229574 + ... + 278985.

It is an arithmetic number, because the mean of its divisors is an integer number (1286148240).

Almost surely, 2^12564458654 is an apocalyptic number.

12564458654 is a deficient number, since it is larger than the sum of its proper divisors (8013913186).

12564458654 is a wasteful number, since it uses less digits than its factorization.

12564458654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509695.

The product of its digits is 4608000, while the sum is 50.

The spelling of 12564458654 in words is "twelve billion, five hundred sixty-four million, four hundred fifty-eight thousand, six hundred fifty-four".