3561095492440 has 64 divisors (see below), whose sum is σ = 8231978030400. Its totient is φ = 1385441330688.

The previous prime is 3561095492401. The next prime is 3561095492441. The reversal of 3561095492440 is 442945901653.

It is a happy number.

It is a super-2 number, since 2×3561095492440² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561095492441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3696357 + ... + 4559083.

It is an arithmetic number, because the mean of its divisors is an integer number (128624656725).

Almost surely, 2^{3561095492440} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3561095492440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4115989015200).

3561095492440 is an abundant number, since it is smaller than the sum of its proper divisors (4670882537960).

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

3561095492440 is a wasteful number, since it uses less digits than its factorization.

3561095492440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865564 (or 865560 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 3561095492440 in words is "three trillion, five hundred sixty-one billion, ninety-five million, four hundred ninety-two thousand, four hundred forty".