1561160622217 has 16 divisors (see below), whose sum is σ = 1792320187392. Its totient is φ = 1332036123840.

The previous prime is 1561160622199. The next prime is 1561160622221. The reversal of 1561160622217 is 7122260611651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1561160622217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1561160622217.

It is not an unprimeable number, because it can be changed into a prime (1561160622517) 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, 26540403 + ... + 26599159.

It is an arithmetic number, because the mean of its divisors is an integer number (112020011712).

Almost surely, 2^{1561160622217} is an apocalyptic number.

It is an amenable number.

1561160622217 is a deficient number, since it is larger than the sum of its proper divisors (231159565175).

1561160622217 is a wasteful number, since it uses less digits than its factorization.

1561160622217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76008.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 1561160622217 in words is "one trillion, five hundred sixty-one billion, one hundred sixty million, six hundred twenty-two thousand, two hundred seventeen".