21320624674 has 8 divisors (see below), whose sum is σ = 31991373648. Its totient is φ = 10656833460.

The previous prime is 21320624669. The next prime is 21320624687. The reversal of 21320624674 is 47642602312.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1731772 + ... + 1744039.

It is an arithmetic number, because the mean of its divisors is an integer number (3998921706).

Almost surely, 2^21320624674 is an apocalyptic number.

21320624674 is a deficient number, since it is larger than the sum of its proper divisors (10670748974).

21320624674 is a wasteful number, since it uses less digits than its factorization.

21320624674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478880.

The product of its (nonzero) digits is 96768, while the sum is 37.

The spelling of 21320624674 in words is "twenty-one billion, three hundred twenty million, six hundred twenty-four thousand, six hundred seventy-four".