5661376437 has 8 divisors (see below), whose sum is σ = 7549703200. Its totient is φ = 3773650320.

The previous prime is 5661376429. The next prime is 5661376459. The reversal of 5661376437 is 7346731665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5661376437 - 2³ = 5661376429 is a prime.

It is a super-2 number, since 2×5661376437² = 64102366322837629938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661375437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127687 + ... + 166212.

It is an arithmetic number, because the mean of its divisors is an integer number (943712900).

Almost surely, 2^5661376437 is an apocalyptic number.

It is an amenable number.

5661376437 is a deficient number, since it is larger than the sum of its proper divisors (1888326763).

5661376437 is a wasteful number, since it uses less digits than its factorization.

5661376437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300323.

The product of its digits is 1905120, while the sum is 48.

The square root of 5661376437 is about 75242.1187700081. The cubic root of 5661376437 is about 1782.2721097518.

The spelling of 5661376437 in words is "five billion, six hundred sixty-one million, three hundred seventy-six thousand, four hundred thirty-seven".