5995549661 has 4 divisors (see below), whose sum is σ = 5996318112. Its totient is φ = 5994781212.

The previous prime is 5995549657. The next prime is 5995549669. The reversal of 5995549661 is 1669455995.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5995549661 - 2² = 5995549657 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 5995549661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5995549669) 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, 372401 + ... + 388166.

It is an arithmetic number, because the mean of its divisors is an integer number (1499079528).

Almost surely, 2^5995549661 is an apocalyptic number.

It is an amenable number.

5995549661 is a deficient number, since it is larger than the sum of its proper divisors (768451).

5995549661 is an equidigital number, since it uses as much as digits as its factorization.

5995549661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768450.

The product of its digits is 13122000, while the sum is 59.

The square root of 5995549661 is about 77430.9347806159. The cubic root of 5995549661 is about 1816.6712148957.

The spelling of 5995549661 in words is "five billion, nine hundred ninety-five million, five hundred forty-nine thousand, six hundred sixty-one".