561157138332 has 192 divisors, whose sum is σ = 1806657126400. Its totient is φ = 146992294080.

The previous prime is 561157138331. The next prime is 561157138349. The reversal of 561157138332 is 233831751165.

561157138332 is a `hidden beast` number, since 5 + 6 + 11 + 571 + 38 + 3 + 32 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561157138331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 184828 + ... + 1075395.

Almost surely, 2^561157138332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561157138332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903328563200).

561157138332 is an abundant number, since it is smaller than the sum of its proper divisors (1245499988068).

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

561157138332 is a wasteful number, since it uses less digits than its factorization.

561157138332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260293 (or 1260285 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

Adding to 561157138332 its reverse (233831751165), we get a palindrome (794988889497).

The spelling of 561157138332 in words is "five hundred sixty-one billion, one hundred fifty-seven million, one hundred thirty-eight thousand, three hundred thirty-two".