16161623931631 has 8 divisors (see below), whose sum is σ = 16345892144304. Its totient is φ = 15977831251200.

The previous prime is 16161623931623. The next prime is 16161623931653. The reversal of 16161623931631 is 13613932616161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16161623931631 - 2³ = 16161623931623 is a prime.

It is a super-2 number, since 2×16161623931631² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16161623931331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118814701 + ... + 118950646.

It is an arithmetic number, because the mean of its divisors is an integer number (2043236518038).

Almost surely, 2^{16161623931631} is an apocalyptic number.

16161623931631 is a deficient number, since it is larger than the sum of its proper divisors (184268212673).

16161623931631 is a wasteful number, since it uses less digits than its factorization.

16161623931631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237766121.

The product of its digits is 629856, while the sum is 49.

The spelling of 16161623931631 in words is "sixteen trillion, one hundred sixty-one billion, six hundred twenty-three million, nine hundred thirty-one thousand, six hundred thirty-one".