3561094976721 has 8 divisors (see below), whose sum is σ = 4753108933920. Its totient is φ = 2371572168672.

The previous prime is 3561094976713. The next prime is 3561094976731. The reversal of 3561094976721 is 1276794901653.

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

It is not a de Polignac number, because 3561094976721 - 2³ = 3561094976713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3561094976731) 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, 622783951 + ... + 622789668.

It is an arithmetic number, because the mean of its divisors is an integer number (594138616740).

Almost surely, 2^{3561094976721} is an apocalyptic number.

It is an amenable number.

3561094976721 is a deficient number, since it is larger than the sum of its proper divisors (1192013957199).

3561094976721 is a wasteful number, since it uses less digits than its factorization.

3561094976721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245574575.

The product of its (nonzero) digits is 17146080, while the sum is 60.

The spelling of 3561094976721 in words is "three trillion, five hundred sixty-one billion, ninety-four million, nine hundred seventy-six thousand, seven hundred twenty-one".