12654225621 has 32 divisors (see below), whose sum is σ = 20272135680. Its totient is φ = 7770958848.

The previous prime is 12654225607. The next prime is 12654225671. The reversal of 12654225621 is 12652245621.

12654225621 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 4 + 2 + 25 + 621 = 666.

It is not a de Polignac number, because 12654225621 - 2⁶ = 12654225557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12654225601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 271716 + ... + 314861.

It is an arithmetic number, because the mean of its divisors is an integer number (633504240).

Almost surely, 2^12654225621 is an apocalyptic number.

It is an amenable number.

12654225621 is a deficient number, since it is larger than the sum of its proper divisors (7617910059).

12654225621 is a wasteful number, since it uses less digits than its factorization.

12654225621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586650 (or 586644 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The spelling of 12654225621 in words is "twelve billion, six hundred fifty-four million, two hundred twenty-five thousand, six hundred twenty-one".