5661236699 has 4 divisors (see below), whose sum is σ = 5754043920. Its totient is φ = 5568429480.

The previous prime is 5661236687. The next prime is 5661236701. The reversal of 5661236699 is 9966321665.

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

It is a cyclic number.

It is not a de Polignac number, because 5661236699 - 2⁴ = 5661236683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5661236699.

It is not an unprimeable number, because it can be changed into a prime (5661236639) 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, 46403519 + ... + 46403640.

It is an arithmetic number, because the mean of its divisors is an integer number (1438510980).

Almost surely, 2^5661236699 is an apocalyptic number.

5661236699 is a deficient number, since it is larger than the sum of its proper divisors (92807221).

5661236699 is an equidigital number, since it uses as much as digits as its factorization.

5661236699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92807220.

The product of its digits is 3149280, while the sum is 53.

The square root of 5661236699 is about 75241.1901753288. The cubic root of 5661236699 is about 1782.2574458744.

The spelling of 5661236699 in words is "five billion, six hundred sixty-one million, two hundred thirty-six thousand, six hundred ninety-nine".