3561193043870 has 48 divisors (see below), whose sum is σ = 8052416686944. Its totient is φ = 1109982244800.

The previous prime is 3561193043819. The next prime is 3561193043873. The reversal of 3561193043870 is 783403911653.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561193043873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210215441 + ... + 210232380.

It is an arithmetic number, because the mean of its divisors is an integer number (167758680978).

Almost surely, 2^{3561193043870} is an apocalyptic number.

3561193043870 is an abundant number, since it is smaller than the sum of its proper divisors (4491223643074).

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

3561193043870 is a wasteful number, since it uses less digits than its factorization.

3561193043870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420447857 (or 420447846 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 3561193043870 in words is "three trillion, five hundred sixty-one billion, one hundred ninety-three million, forty-three thousand, eight hundred seventy".