5111061660 has 96 divisors (see below), whose sum is σ = 16026501120. Its totient is φ = 1352199744.

The previous prime is 5111061619. The next prime is 5111061661. The reversal of 5111061660 is 661601115.

It is a super-2 number, since 2×5111061660² = 52245902584643911200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111061661) 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, 31317 + ... + 105843.

It is an arithmetic number, because the mean of its divisors is an integer number (166942720).

Almost surely, 2^5111061660 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 5111061660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8013250560).

5111061660 is an abundant number, since it is smaller than the sum of its proper divisors (10915439460).

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

5111061660 is a wasteful number, since it uses less digits than its factorization.

5111061660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74672 (or 74664 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 5111061660 is about 71491.6894470959. The cubic root of 5111061660 is about 1722.5441954222.

Adding to 5111061660 its reverse (661601115), we get a palindrome (5772662775).

The spelling of 5111061660 in words is "five billion, one hundred eleven million, sixty-one thousand, six hundred sixty".