5561191823 has 6 divisors (see below), whose sum is σ = 6112715112. Its totient is φ = 5055628820.

The previous prime is 5561191787. The next prime is 5561191843. The reversal of 5561191823 is 3281911655.

It is not a de Polignac number, because 5561191823 - 2²⁴ = 5544414607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561191843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22980011 + ... + 22980252.

It is an arithmetic number, because the mean of its divisors is an integer number (1018785852).

Almost surely, 2^5561191823 is an apocalyptic number.

5561191823 is a deficient number, since it is larger than the sum of its proper divisors (551523289).

5561191823 is a wasteful number, since it uses less digits than its factorization.

5561191823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45960285 (or 45960274 counting only the distinct ones).

The product of its digits is 64800, while the sum is 41.

The square root of 5561191823 is about 74573.3988966575. The cubic root of 5561191823 is about 1771.6963556601.

The spelling of 5561191823 in words is "five billion, five hundred sixty-one million, one hundred ninety-one thousand, eight hundred twenty-three".