16221559910 has 32 divisors (see below), whose sum is σ = 29335914720. Its totient is φ = 6458220288.

The previous prime is 16221559901. The next prime is 16221559927. The reversal of 16221559910 is 1995512261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2309564 + ... + 2316576.

It is an arithmetic number, because the mean of its divisors is an integer number (916747335).

Almost surely, 2^16221559910 is an apocalyptic number.

16221559910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16221559910 is a deficient number, since it is larger than the sum of its proper divisors (13114354810).

16221559910 is a wasteful number, since it uses less digits than its factorization.

16221559910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8072.

The product of its (nonzero) digits is 48600, while the sum is 41.

The spelling of 16221559910 in words is "sixteen billion, two hundred twenty-one million, five hundred fifty-nine thousand, nine hundred ten".