12664415142 has 24 divisors (see below), whose sum is σ = 27450137520. Its totient is φ = 4219845360.

The previous prime is 12664415063. The next prime is 12664415171. The reversal of 12664415142 is 24151446621.

12664415142 is a `hidden beast` number, since 1 + 2 + 6 + 644 + 1 + 5 + 1 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 12664415097 and 12664415106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87042 + ... + 181397.

It is an arithmetic number, because the mean of its divisors is an integer number (1143755730).

Almost surely, 2^12664415142 is an apocalyptic number.

12664415142 is an abundant number, since it is smaller than the sum of its proper divisors (14785722378).

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

12664415142 is a wasteful number, since it uses less digits than its factorization.

12664415142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271068 (or 271065 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The spelling of 12664415142 in words is "twelve billion, six hundred sixty-four million, four hundred fifteen thousand, one hundred forty-two".