12657450654 has 24 divisors (see below), whose sum is σ = 27707206800. Its totient is φ = 4175653248.

The previous prime is 12657450653. The next prime is 12657450661. The reversal of 12657450654 is 45605475621.

12657450654 is a `hidden beast` number, since 1 + 26 + 5 + 74 + 506 + 54 = 666.

It is a super-2 number, since 2×12657450654² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12657450653) 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, 3622954 + ... + 3626445.

It is an arithmetic number, because the mean of its divisors is an integer number (1154466950).

Almost surely, 2^12657450654 is an apocalyptic number.

12657450654 is an abundant number, since it is smaller than the sum of its proper divisors (15049756146).

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

12657450654 is a wasteful number, since it uses less digits than its factorization.

12657450654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7249504 (or 7249501 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 12657450654 in words is "twelve billion, six hundred fifty-seven million, four hundred fifty thousand, six hundred fifty-four".