16611210455 has 20 divisors (see below), whose sum is σ = 23254327752. Its totient is φ = 11390536080.

The previous prime is 16611210449. The next prime is 16611210463. The reversal of 16611210455 is 55401211661.

It is a de Polignac number, because none of the positive numbers 2^k-16611210455 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 679841 + ... + 703850.

Almost surely, 2^16611210455 is an apocalyptic number.

16611210455 is a deficient number, since it is larger than the sum of its proper divisors (6643117297).

16611210455 is an frugal number, since it uses more digits than its factorization.

16611210455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383724 (or 1383703 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 16611210455 in words is "sixteen billion, six hundred eleven million, two hundred ten thousand, four hundred fifty-five".