21620832710 has 16 divisors (see below), whose sum is σ = 39969323856. Its totient is φ = 8414594208.

The previous prime is 21620832683. The next prime is 21620832749. The reversal of 21620832710 is 1723802612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29216972 + ... + 29217711.

It is an arithmetic number, because the mean of its divisors is an integer number (2498082741).

Almost surely, 2^21620832710 is an apocalyptic number.

21620832710 is a deficient number, since it is larger than the sum of its proper divisors (18348491146).

21620832710 is a wasteful number, since it uses less digits than its factorization.

21620832710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58434727.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 21620832710 in words is "twenty-one billion, six hundred twenty million, eight hundred thirty-two thousand, seven hundred ten".