16004972631 has 4 divisors (see below), whose sum is σ = 21339963512. Its totient is φ = 10669981752.

The previous prime is 16004972629. The next prime is 16004972647. The reversal of 16004972631 is 13627940061.

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

It is not a de Polignac number, because 16004972631 - 2¹ = 16004972629 is a prime.

It is a super-2 number, since 2×16004972631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16004972631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16004973631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2667495436 + ... + 2667495441.

It is an arithmetic number, because the mean of its divisors is an integer number (5334990878).

Almost surely, 2^16004972631 is an apocalyptic number.

16004972631 is a deficient number, since it is larger than the sum of its proper divisors (5334990881).

16004972631 is an equidigital number, since it uses as much as digits as its factorization.

16004972631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5334990880.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 16004972631 in words is "sixteen billion, four million, nine hundred seventy-two thousand, six hundred thirty-one".