12642933540 has 48 divisors (see below), whose sum is σ = 35462306880. Its totient is φ = 3365535360.

The previous prime is 12642933539. The next prime is 12642933571. The reversal of 12642933540 is 4533924621.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150255 + ... + 218774.

It is an arithmetic number, because the mean of its divisors is an integer number (738798060).

Almost surely, 2^12642933540 is an apocalyptic number.

12642933540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12642933540 is an abundant number, since it is smaller than the sum of its proper divisors (22819373340).

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

12642933540 is a wasteful number, since it uses less digits than its factorization.

12642933540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369612 (or 369610 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 12642933540 in words is "twelve billion, six hundred forty-two million, nine hundred thirty-three thousand, five hundred forty".