5611555720 has 32 divisors (see below), whose sum is σ = 12644334720. Its totient is φ = 2241362880.

The previous prime is 5611555717. The next prime is 5611555723. The reversal of 5611555720 is 275551165.

It is an interprime number because it is at equal distance from previous prime (5611555717) and next prime (5611555723).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 5611555720.

It is not an unprimeable number, because it can be changed into a prime (5611555723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73872 + ... + 129151.

It is an arithmetic number, because the mean of its divisors is an integer number (395135460).

Almost surely, 2^5611555720 is an apocalyptic number.

It is an amenable number.

5611555720 is an abundant number, since it is smaller than the sum of its proper divisors (7032779000).

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

5611555720 is a wasteful number, since it uses less digits than its factorization.

5611555720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203725 (or 203721 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 37.

The square root of 5611555720 is about 74910.3178474100. The cubic root of 5611555720 is about 1777.0286368915.

The spelling of 5611555720 in words is "five billion, six hundred eleven million, five hundred fifty-five thousand, seven hundred twenty".