16393831955 has 4 divisors (see below), whose sum is σ = 19672598352. Its totient is φ = 13115065560.

The previous prime is 16393831931. The next prime is 16393831999. The reversal of 16393831955 is 55913839361.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16393831955 - 2⁶ = 16393831891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16393831897 and 16393831906.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1639383191 + ... + 1639383200.

It is an arithmetic number, because the mean of its divisors is an integer number (4918149588).

Almost surely, 2^16393831955 is an apocalyptic number.

16393831955 is a deficient number, since it is larger than the sum of its proper divisors (3278766397).

16393831955 is an equidigital number, since it uses as much as digits as its factorization.

16393831955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278766396.

The product of its digits is 2624400, while the sum is 53.

The spelling of 16393831955 in words is "sixteen billion, three hundred ninety-three million, eight hundred thirty-one thousand, nine hundred fifty-five".