21576760012 has 96 divisors (see below), whose sum is σ = 41613465600. Its totient is φ = 9753219072.

The previous prime is 21576759983. The next prime is 21576760033. The reversal of 21576760012 is 21006767512.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45045189 + ... + 45045667.

It is an arithmetic number, because the mean of its divisors is an integer number (433473600).

Almost surely, 2^21576760012 is an apocalyptic number.

It is an amenable number.

21576760012 is a deficient number, since it is larger than the sum of its proper divisors (20036705588).

21576760012 is a wasteful number, since it uses less digits than its factorization.

21576760012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 21576760012 in words is "twenty-one billion, five hundred seventy-six million, seven hundred sixty thousand, twelve".