5561718876 has 252 divisors, whose sum is σ = 17173373392. Its totient is φ = 1543007232.

The previous prime is 5561718871. The next prime is 5561718881. The reversal of 5561718876 is 6788171655.

5561718876 is a `hidden beast` number, since 5 + 5 + 617 + 18 + 8 + 7 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (5561718871) and next prime (5561718881).

It is a tau number, because it is divible by the number of its divisors (252).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561718871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 57337260 + ... + 57337356.

Almost surely, 2^5561718876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5561718876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8586686696).

5561718876 is an abundant number, since it is smaller than the sum of its proper divisors (11611654516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5561718876 is an equidigital number, since it uses as much as digits as its factorization.

5561718876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 162 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 54.

The square root of 5561718876 is about 74576.9325998328. The cubic root of 5561718876 is about 1771.7523237818.

The spelling of 5561718876 in words is "five billion, five hundred sixty-one million, seven hundred eighteen thousand, eight hundred seventy-six".