5121201660 has 24 divisors (see below), whose sum is σ = 14339364816. Its totient is φ = 1365653760.

The previous prime is 5121201653. The next prime is 5121201661. The reversal of 5121201660 is 661021215.

It is a self number, because there is not a number n which added to its sum of digits gives 5121201660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121201661) 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, 42676621 + ... + 42676740.

It is an arithmetic number, because the mean of its divisors is an integer number (597473534).

Almost surely, 2^5121201660 is an apocalyptic number.

It is an amenable number.

5121201660 is an abundant number, since it is smaller than the sum of its proper divisors (9218163156).

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

5121201660 is a wasteful number, since it uses less digits than its factorization.

5121201660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85353373 (or 85353371 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 5121201660 is about 71562.5716418855. The cubic root of 5121201660 is about 1723.6825799150.

Adding to 5121201660 its reverse (661021215), we get a palindrome (5782222875).

The spelling of 5121201660 in words is "five billion, one hundred twenty-one million, two hundred one thousand, six hundred sixty".