5544721660 has 48 divisors (see below), whose sum is σ = 11708292960. Its totient is φ = 2205665280.

The previous prime is 5544721639. The next prime is 5544721681. The reversal of 5544721660 is 661274455.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5544721639) and next prime (5544721681).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3510751 + ... + 3512329.

It is an arithmetic number, because the mean of its divisors is an integer number (243922770).

Almost surely, 2^5544721660 is an apocalyptic number.

It is an amenable number.

5544721660 is an abundant number, since it is smaller than the sum of its proper divisors (6163571300).

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

5544721660 is a wasteful number, since it uses less digits than its factorization.

5544721660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446 (or 2444 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 5544721660 is about 74462.8878032540. The cubic root of 5544721660 is about 1769.9455929311.

The spelling of 5544721660 in words is "five billion, five hundred forty-four million, seven hundred twenty-one thousand, six hundred sixty".