10915240475561 has 6 divisors (see below), whose sum is σ = 11519962939962. Its totient is φ = 10340754134400.

The previous prime is 10915240475537. The next prime is 10915240475609. The reversal of 10915240475561 is 16557404251901.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9596117017600 + 1319123457961 = 3097760^2 + 1148531^2 .

It is not a de Polignac number, because 10915240475561 - 2²⁶ = 10915173366697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10915240415561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15118061240 + ... + 15118061961.

It is an arithmetic number, because the mean of its divisors is an integer number (1919993823327).

Almost surely, 2^{10915240475561} is an apocalyptic number.

It is an amenable number.

10915240475561 is a deficient number, since it is larger than the sum of its proper divisors (604722464401).

10915240475561 is an equidigital number, since it uses as much as digits as its factorization.

10915240475561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30236123239 (or 30236123220 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 50.

The spelling of 10915240475561 in words is "ten trillion, nine hundred fifteen billion, two hundred forty million, four hundred seventy-five thousand, five hundred sixty-one".