561711388432540 has 12 divisors (see below), whose sum is σ = 1179593915708376. Its totient is φ = 224684555373008.

The previous prime is 561711388432517. The next prime is 561711388432553. The reversal of 561711388432540 is 45234883117165.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14042784710794 + ... + 14042784710833.

It is an arithmetic number, because the mean of its divisors is an integer number (98299492975698).

Almost surely, 2^{561711388432540} is an apocalyptic number.

It is an amenable number.

561711388432540 is an abundant number, since it is smaller than the sum of its proper divisors (617882527275836).

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

561711388432540 is a wasteful number, since it uses less digits than its factorization.

561711388432540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28085569421636 (or 28085569421634 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 58.

The spelling of 561711388432540 in words is "five hundred sixty-one trillion, seven hundred eleven billion, three hundred eighty-eight million, four hundred thirty-two thousand, five hundred forty".