8561241296553 has 32 divisors (see below), whose sum is σ = 13879186583040. Its totient is φ = 4626395516160.

The previous prime is 8561241296539. The next prime is 8561241296581. The reversal of 8561241296553 is 3556921421658.

It is not a de Polignac number, because 8561241296553 - 2³² = 8556946329257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8561241296493 and 8561241296502.

It is not an unprimeable number, because it can be changed into a prime (8561241296513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401586175 + ... + 401607492.

It is an arithmetic number, because the mean of its divisors is an integer number (433724580720).

Almost surely, 2^{8561241296553} is an apocalyptic number.

It is an amenable number.

8561241296553 is a deficient number, since it is larger than the sum of its proper divisors (5317945286487).

8561241296553 is a wasteful number, since it uses less digits than its factorization.

8561241296553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803193717.

The product of its digits is 15552000, while the sum is 57.

The spelling of 8561241296553 in words is "eight trillion, five hundred sixty-one billion, two hundred forty-one million, two hundred ninety-six thousand, five hundred fifty-three".