16231163644 has 54 divisors (see below), whose sum is σ = 31193371104. Its totient is φ = 7380817920.

The previous prime is 16231163617. The next prime is 16231163647. The reversal of 16231163644 is 44636113261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16231163647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24117292 + ... + 24117964.

Almost surely, 2^16231163644 is an apocalyptic number.

It is an amenable number.

16231163644 is a deficient number, since it is larger than the sum of its proper divisors (14962207460).

16231163644 is an equidigital number, since it uses as much as digits as its factorization.

16231163644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415 (or 723 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The spelling of 16231163644 in words is "sixteen billion, two hundred thirty-one million, one hundred sixty-three thousand, six hundred forty-four".