16310617874561 has 4 divisors (see below), whose sum is σ = 16657652297472. Its totient is φ = 15963583451652.

The previous prime is 16310617874549. The next prime is 16310617874569. The reversal of 16310617874561 is 16547871601361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16310617874561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16310617874497 and 16310617874506.

It is not an unprimeable number, because it can be changed into a prime (16310617874569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173517211385 + ... + 173517211478.

It is an arithmetic number, because the mean of its divisors is an integer number (4164413074368).

Almost surely, 2^{16310617874561} is an apocalyptic number.

It is an amenable number.

16310617874561 is a deficient number, since it is larger than the sum of its proper divisors (347034422911).

16310617874561 is an equidigital number, since it uses as much as digits as its factorization.

16310617874561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347034422910.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 16310617874561 in words is "sixteen trillion, three hundred ten billion, six hundred seventeen million, eight hundred seventy-four thousand, five hundred sixty-one".