5111661660 has 96 divisors (see below), whose sum is σ = 17319536640. Its totient is φ = 1099650048.

The previous prime is 5111661631. The next prime is 5111661661. The reversal of 5111661660 is 661661115.

It is a super-2 number, since 2×5111661660² = 52258169852627911200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111661661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 350820 + ... + 365099.

It is an arithmetic number, because the mean of its divisors is an integer number (180411840).

Almost surely, 2^5111661660 is an apocalyptic number.

It is an amenable number.

5111661660 is an abundant number, since it is smaller than the sum of its proper divisors (12207874980).

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

5111661660 is a wasteful number, since it uses less digits than its factorization.

5111661660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715955 (or 715953 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 5111661660 is about 71495.8856158870. The cubic root of 5111661660 is about 1722.6115973402.

The spelling of 5111661660 in words is "five billion, one hundred eleven million, six hundred sixty-one thousand, six hundred sixty".