561142134160 has 20 divisors (see below), whose sum is σ = 1304655462108. Its totient is φ = 224456853632.

The previous prime is 561142134151. The next prime is 561142134167. The reversal of 561142134160 is 61431241165.

It can be written as a sum of positive squares in 2 ways, for example, as 134304658576 + 426837475584 = 366476^2 + 653328^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (561142134167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3507138259 + ... + 3507138418.

Almost surely, 2^561142134160 is an apocalyptic number.

It is an amenable number.

561142134160 is an abundant number, since it is smaller than the sum of its proper divisors (743513327948).

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

561142134160 is a wasteful number, since it uses less digits than its factorization.

561142134160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7014276690 (or 7014276684 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 561142134160 in words is "five hundred sixty-one billion, one hundred forty-two million, one hundred thirty-four thousand, one hundred sixty".