21889683926 has 16 divisors (see below), whose sum is σ = 35831900880. Its totient is φ = 9946406880.

The previous prime is 21889683887. The next prime is 21889683941. The reversal of 21889683926 is 62938698812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107021 + ... + 235016.

It is an arithmetic number, because the mean of its divisors is an integer number (2239493805).

Almost surely, 2^21889683926 is an apocalyptic number.

21889683926 is a deficient number, since it is larger than the sum of its proper divisors (13942216954).

21889683926 is a wasteful number, since it uses less digits than its factorization.

21889683926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344959.

The product of its digits is 17915904, while the sum is 62.

The spelling of 21889683926 in words is "twenty-one billion, eight hundred eighty-nine million, six hundred eighty-three thousand, nine hundred twenty-six".