21709032662 has 16 divisors (see below), whose sum is σ = 32712902352. Its totient is φ = 10804759680.

The previous prime is 21709032659. The next prime is 21709032679. The reversal of 21709032662 is 26623090712.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3021218 + ... + 3028394.

It is an arithmetic number, because the mean of its divisors is an integer number (2044556397).

Almost surely, 2^21709032662 is an apocalyptic number.

21709032662 is a deficient number, since it is larger than the sum of its proper divisors (11003869690).

21709032662 is a wasteful number, since it uses less digits than its factorization.

21709032662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13903.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 21709032662 in words is "twenty-one billion, seven hundred nine million, thirty-two thousand, six hundred sixty-two".