16510660651 has 16 divisors (see below), whose sum is σ = 16712736768. Its totient is φ = 16310340000.

The previous prime is 16510660643. The next prime is 16510660669. The reversal of 16510660651 is 15606601561.

It is a cyclic number.

It is not a de Polignac number, because 16510660651 - 2³ = 16510660643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16510660651.

It is not an unprimeable number, because it can be changed into a prime (16510660351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21984526 + ... + 21985276.

It is an arithmetic number, because the mean of its divisors is an integer number (1044546048).

Almost surely, 2^16510660651 is an apocalyptic number.

16510660651 is a deficient number, since it is larger than the sum of its proper divisors (202076117).

16510660651 is a wasteful number, since it uses less digits than its factorization.

16510660651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 16510660651 in words is "sixteen billion, five hundred ten million, six hundred sixty thousand, six hundred fifty-one".