16919983081 has 16 divisors (see below), whose sum is σ = 17201600640. Its totient is φ = 16641118080.

The previous prime is 16919983063. The next prime is 16919983111. The reversal of 16919983081 is 18038991961.

It is a cyclic number.

It is not a de Polignac number, because 16919983081 - 2¹⁷ = 16919852009 is a prime.

It is a super-2 number, since 2×16919983081² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16919983061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11197116 + ... + 11198626.

It is an arithmetic number, because the mean of its divisors is an integer number (1075100040).

Almost surely, 2^16919983081 is an apocalyptic number.

It is an amenable number.

16919983081 is a deficient number, since it is larger than the sum of its proper divisors (281617559).

16919983081 is a wasteful number, since it uses less digits than its factorization.

16919983081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304.

The product of its (nonzero) digits is 839808, while the sum is 55.

It can be divided in two parts, 16919 and 983081, that added together give a 6-th power (1000000 = 10⁶).

The spelling of 16919983081 in words is "sixteen billion, nine hundred nineteen million, nine hundred eighty-three thousand, eighty-one".