5661504126 has 32 divisors (see below), whose sum is σ = 12598233600. Its totient is φ = 1884601080.

The previous prime is 5661504113. The next prime is 5661504127. The reversal of 5661504126 is 6214051665.

5661504126 is a `hidden beast` number, since 566 + 1 + 50 + 41 + 2 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661504127) 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 15 ways as a sum of consecutive naturals, for example, 31030 + ... + 110841.

It is an arithmetic number, because the mean of its divisors is an integer number (393694800).

Almost surely, 2^5661504126 is an apocalyptic number.

5661504126 is an abundant number, since it is smaller than the sum of its proper divisors (6936729474).

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

5661504126 is a wasteful number, since it uses less digits than its factorization.

5661504126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142621 (or 142615 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 5661504126 is about 75242.9672859863. The cubic root of 5661504126 is about 1782.2855090158.

The spelling of 5661504126 in words is "five billion, six hundred sixty-one million, five hundred four thousand, one hundred twenty-six".