16234718665 has 24 divisors (see below), whose sum is σ = 22010908608. Its totient is φ = 11399895360.

The previous prime is 16234718653. The next prime is 16234718677. The reversal of 16234718665 is 56681743261.

It is an interprime number because it is at equal distance from previous prime (16234718653) and next prime (16234718677).

It is not a de Polignac number, because 16234718665 - 2⁷ = 16234718537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129237 + ... + 221746.

It is an arithmetic number, because the mean of its divisors is an integer number (917121192).

Almost surely, 2^16234718665 is an apocalyptic number.

It is an amenable number.

16234718665 is a deficient number, since it is larger than the sum of its proper divisors (5776189943).

16234718665 is a wasteful number, since it uses less digits than its factorization.

16234718665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351057 (or 351028 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The spelling of 16234718665 in words is "sixteen billion, two hundred thirty-four million, seven hundred eighteen thousand, six hundred sixty-five".