16346555631 has 24 divisors (see below), whose sum is σ = 27102651680. Its totient is φ = 9300090816.

The previous prime is 16346555611. The next prime is 16346555647. The reversal of 16346555631 is 13655564361.

It is a happy number.

16346555631 is a `hidden beast` number, since 1 + 6 + 3 + 4 + 6 + 5 + 5 + 5 + 631 = 666.

It is not a de Polignac number, because 16346555631 - 2¹⁴ = 16346539247 is a prime.

It is a super-2 number, since 2×16346555631² (a number of 21 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 (16346555611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 552100 + ... + 580953.

Almost surely, 2^16346555631 is an apocalyptic number.

16346555631 is a deficient number, since it is larger than the sum of its proper divisors (10756096049).

16346555631 is a wasteful number, since it uses less digits than its factorization.

16346555631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133295 (or 1133292 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The spelling of 16346555631 in words is "sixteen billion, three hundred forty-six million, five hundred fifty-five thousand, six hundred thirty-one".