16465256642 has 16 divisors (see below), whose sum is σ = 24892762752. Its totient is φ = 8167701360.

The previous prime is 16465256627. The next prime is 16465256657. The reversal of 16465256642 is 24665256461.

It is an interprime number because it is at equal distance from previous prime (16465256627) and next prime (16465256657).

It is a super-2 number, since 2×16465256642² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1793528 + ... + 1802684.

It is an arithmetic number, because the mean of its divisors is an integer number (1555797672).

Almost surely, 2^16465256642 is an apocalyptic number.

16465256642 is a deficient number, since it is larger than the sum of its proper divisors (8427506110).

16465256642 is a wasteful number, since it uses less digits than its factorization.

16465256642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16153.

The product of its digits is 2073600, while the sum is 47.

The spelling of 16465256642 in words is "sixteen billion, four hundred sixty-five million, two hundred fifty-six thousand, six hundred forty-two".