3121115565660 has 48 divisors (see below), whose sum is σ = 8747344951296. Its totient is φ = 831514496832.

The previous prime is 3121115565653. The next prime is 3121115565679. The reversal of 3121115565660 is 665655111213.

It is a super-3 number, since 3×3121115565660³ (a number of 38 digits) contains 333 as substring.

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, 24404044 + ... + 24531603.

It is an arithmetic number, because the mean of its divisors is an integer number (182236353152).

Almost surely, 2^{3121115565660} is an apocalyptic number.

3121115565660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3121115565660 is an abundant number, since it is smaller than the sum of its proper divisors (5626229385636).

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

3121115565660 is a wasteful number, since it uses less digits than its factorization.

3121115565660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48936722 (or 48936720 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 3121115565660 in words is "three trillion, one hundred twenty-one billion, one hundred fifteen million, five hundred sixty-five thousand, six hundred sixty".