12642668370 has 24 divisors (see below), whose sum is σ = 32870937996. Its totient is φ = 3371378208.

The previous prime is 12642668351. The next prime is 12642668393. The reversal of 12642668370 is 7386624621.

12642668370 is a `hidden beast` number, since 12 + 6 + 4 + 266 + 8 + 370 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12425783841 + 216884529 = 111471^2 + 14727^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 70236957 + ... + 70237136.

Almost surely, 2^12642668370 is an apocalyptic number.

12642668370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12642668370 is an abundant number, since it is smaller than the sum of its proper divisors (20228269626).

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

12642668370 is a wasteful number, since it uses less digits than its factorization.

12642668370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140474106 (or 140474103 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 12642668370 in words is "twelve billion, six hundred forty-two million, six hundred sixty-eight thousand, three hundred seventy".