16664654331 has 48 divisors (see below), whose sum is σ = 26872975584. Its totient is φ = 9884477952.

The previous prime is 16664654329. The next prime is 16664654353. The reversal of 16664654331 is 13345646661.

It is not a de Polignac number, because 16664654331 - 2¹ = 16664654329 is a prime.

It is a super-2 number, since 2×16664654331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16664654431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 445215 + ... + 481191.

It is an arithmetic number, because the mean of its divisors is an integer number (559853658).

Almost surely, 2^16664654331 is an apocalyptic number.

16664654331 is a deficient number, since it is larger than the sum of its proper divisors (10208321253).

16664654331 is a wasteful number, since it uses less digits than its factorization.

16664654331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36140 (or 36137 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The spelling of 16664654331 in words is "sixteen billion, six hundred sixty-four million, six hundred fifty-four thousand, three hundred thirty-one".