3561540723872 has 24 divisors (see below), whose sum is σ = 7021930642272. Its totient is φ = 1778193259200.

The previous prime is 3561540723817. The next prime is 3561540723931. The reversal of 3561540723872 is 2783270451653.

It is a happy number.

3561540723872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80512004 + ... + 80556227.

It is an arithmetic number, because the mean of its divisors is an integer number (292580443428).

Almost surely, 2^{3561540723872} is an apocalyptic number.

3561540723872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3561540723872 is a deficient number, since it is larger than the sum of its proper divisors (3460389918400).

3561540723872 is a wasteful number, since it uses less digits than its factorization.

3561540723872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161068932 (or 161068924 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 53.

The spelling of 3561540723872 in words is "three trillion, five hundred sixty-one billion, five hundred forty million, seven hundred twenty-three thousand, eight hundred seventy-two".