15556450362161 has 8 divisors (see below), whose sum is σ = 15579100892160. Its totient is φ = 15533808931872.

The previous prime is 15556450362059. The next prime is 15556450362181. The reversal of 15556450362161 is 16126305465551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15556450362161 is a prime.

It is a super-3 number, since 3×15556450362161³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15556450362181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150421 + ... + 5695293.

It is an arithmetic number, because the mean of its divisors is an integer number (1947387611520).

Almost surely, 2^{15556450362161} is an apocalyptic number.

It is an amenable number.

15556450362161 is a deficient number, since it is larger than the sum of its proper divisors (22650529999).

15556450362161 is an equidigital number, since it uses as much as digits as its factorization.

15556450362161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549855.

The product of its (nonzero) digits is 3240000, while the sum is 50.

The spelling of 15556450362161 in words is "fifteen trillion, five hundred fifty-six billion, four hundred fifty million, three hundred sixty-two thousand, one hundred sixty-one".