915552851144561 has 8 divisors (see below), whose sum is σ = 1046346374498304. Its totient is φ = 784759392516960.

The previous prime is 915552851144543. The next prime is 915552851144567. The reversal of 915552851144561 is 165441158255519.

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

It is not a de Polignac number, because 915552851144561 - 2⁶ = 915552851144497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 915552851144494 and 915552851144503.

It is not an unprimeable number, because it can be changed into a prime (915552851144567) 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, 19322576 + ... + 46951758.

It is an arithmetic number, because the mean of its divisors is an integer number (130793296812288).

Almost surely, 2^{915552851144561} is an apocalyptic number.

It is an amenable number.

915552851144561 is a deficient number, since it is larger than the sum of its proper divisors (130793523353743).

915552851144561 is a wasteful number, since it uses less digits than its factorization.

915552851144561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32363071.

The product of its digits is 43200000, while the sum is 62.

The spelling of 915552851144561 in words is "nine hundred fifteen trillion, five hundred fifty-two billion, eight hundred fifty-one million, one hundred forty-four thousand, five hundred sixty-one".