3561023540 has 48 divisors (see below), whose sum is σ = 7520424912. Its totient is φ = 1416385536.

The previous prime is 3561023527. The next prime is 3561023561. The reversal of 3561023540 is 453201653.

It can be written as a sum of positive squares in 8 ways, for example, as 4571044 + 3556452496 = 2138^2 + 59636^2 .

It is a congruent number.

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, 4154792 + ... + 4155648.

It is an arithmetic number, because the mean of its divisors is an integer number (156675519).

Almost surely, 2^3561023540 is an apocalyptic number.

It is an amenable number.

3561023540 is an abundant number, since it is smaller than the sum of its proper divisors (3959401372).

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

3561023540 is a wasteful number, since it uses less digits than its factorization.

3561023540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 3561023540 is about 59674.3122289650. The cubic root of 3561023540 is about 1527.0676659573.

The spelling of 3561023540 in words is "three billion, five hundred sixty-one million, twenty-three thousand, five hundred forty".