5661200138 has 24 divisors (see below), whose sum is σ = 9825231360. Its totient is φ = 2437835400.

The previous prime is 5661200089. The next prime is 5661200143. The reversal of 5661200138 is 8310021665.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 611018 + ... + 620213.

It is an arithmetic number, because the mean of its divisors is an integer number (409384640).

Almost surely, 2^5661200138 is an apocalyptic number.

5661200138 is a deficient number, since it is larger than the sum of its proper divisors (4164031222).

5661200138 is a wasteful number, since it uses less digits than its factorization.

5661200138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231274 (or 1231263 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 5661200138 is about 75240.9472162598. The cubic root of 5661200138 is about 1782.2536091830.

The spelling of 5661200138 in words is "five billion, six hundred sixty-one million, two hundred thousand, one hundred thirty-eight".