3561256002 has 16 divisors (see below), whose sum is σ = 7130044512. Its totient is φ = 1185829920.

The previous prime is 3561255983. The next prime is 3561256019. The reversal of 3561256002 is 2006521653.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307699 + ... + 319062.

It is an arithmetic number, because the mean of its divisors is an integer number (445627782).

Almost surely, 2^3561256002 is an apocalyptic number.

3561256002 is an abundant number, since it is smaller than the sum of its proper divisors (3568788510).

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

3561256002 is a wasteful number, since it uses less digits than its factorization.

3561256002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627713.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 3561256002 is about 59676.2599531841. The cubic root of 3561256002 is about 1527.1008939956.

Adding to 3561256002 its reverse (2006521653), we get a palindrome (5567777655).

The spelling of 3561256002 in words is "three billion, five hundred sixty-one million, two hundred fifty-six thousand, two".