5641761761 has 4 divisors (see below), whose sum is σ = 5836305300. Its totient is φ = 5447218224.

The previous prime is 5641761707. The next prime is 5641761787. The reversal of 5641761761 is 1671671465.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3446277025 + 2195484736 = 58705^2 + 46856^2 .

It is a cyclic number.

It is not a de Polignac number, because 5641761761 - 2²² = 5637567457 is a prime.

It is a super-2 number, since 2×5641761761² = 63658951535763642242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5641761361) 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, 97271726 + ... + 97271783.

It is an arithmetic number, because the mean of its divisors is an integer number (1459076325).

Almost surely, 2^5641761761 is an apocalyptic number.

It is an amenable number.

5641761761 is a deficient number, since it is larger than the sum of its proper divisors (194543539).

5641761761 is a wasteful number, since it uses less digits than its factorization.

5641761761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194543538.

The product of its digits is 211680, while the sum is 44.

The square root of 5641761761 is about 75111.6619507251. The cubic root of 5641761761 is about 1780.2114129442.

The spelling of 5641761761 in words is "five billion, six hundred forty-one million, seven hundred sixty-one thousand, seven hundred sixty-one".