16161900443019 has 40 divisors (see below), whose sum is σ = 24365901241440. Its totient is φ = 10675172736000.

The previous prime is 16161900443009. The next prime is 16161900443047. The reversal of 16161900443019 is 91034400916161.

16161900443019 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 190 + 0 + 443 + 0 + 19 = 666.

It is not a de Polignac number, because 16161900443019 - 2⁸ = 16161900442763 is a prime.

It is a super-2 number, since 2×16161900443019² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16161900443009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 216723499 + ... + 216798059.

It is an arithmetic number, because the mean of its divisors is an integer number (609147531036).

Almost surely, 2^{16161900443019} is an apocalyptic number.

16161900443019 is a deficient number, since it is larger than the sum of its proper divisors (8204000798421).

16161900443019 is a wasteful number, since it uses less digits than its factorization.

16161900443019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99233 (or 99224 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 16161900443019 in words is "sixteen trillion, one hundred sixty-one billion, nine hundred million, four hundred forty-three thousand, nineteen".