3561131332842 has 32 divisors (see below), whose sum is σ = 7133813709120. Its totient is φ = 1185118851840.

The previous prime is 3561131332751. The next prime is 3561131332859. The reversal of 3561131332842 is 2482331311653.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3561131332794 and 3561131332803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101528884 + ... + 101563952.

It is an arithmetic number, because the mean of its divisors is an integer number (222931678410).

Almost surely, 2^{3561131332842} is an apocalyptic number.

3561131332842 is an abundant number, since it is smaller than the sum of its proper divisors (3572682376278).

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

3561131332842 is a wasteful number, since it uses less digits than its factorization.

3561131332842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62038.

The product of its digits is 311040, while the sum is 42.

The spelling of 3561131332842 in words is "three trillion, five hundred sixty-one billion, one hundred thirty-one million, three hundred thirty-two thousand, eight hundred forty-two".