9561506845744 has 20 divisors (see below), whose sum is σ = 21171908015824. Its totient is φ = 4097788648128.

The previous prime is 9561506845727. The next prime is 9561506845783. The reversal of 9561506845744 is 4475486051659.

It is a super-2 number, since 2×9561506845744² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42685298307 + ... + 42685298530.

Almost surely, 2^{9561506845744} is an apocalyptic number.

It is an amenable number.

9561506845744 is an abundant number, since it is smaller than the sum of its proper divisors (11610401170080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9561506845744 is a wasteful number, since it uses less digits than its factorization.

9561506845744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85370596852 (or 85370596846 counting only the distinct ones).

The product of its (nonzero) digits is 145152000, while the sum is 64.

The spelling of 9561506845744 in words is "nine trillion, five hundred sixty-one billion, five hundred six million, eight hundred forty-five thousand, seven hundred forty-four".