21232517074 has 8 divisors (see below), whose sum is σ = 31864682160. Its totient is φ = 10610956356.

The previous prime is 21232517057. The next prime is 21232517087. The reversal of 21232517074 is 47071523212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2646084 + ... + 2654095.

It is an arithmetic number, because the mean of its divisors is an integer number (3983085270).

Almost surely, 2^21232517074 is an apocalyptic number.

21232517074 is a deficient number, since it is larger than the sum of its proper divisors (10632165086).

21232517074 is a wasteful number, since it uses less digits than its factorization.

21232517074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302184.

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 21232517074 in words is "twenty-one billion, two hundred thirty-two million, five hundred seventeen thousand, seventy-four".