6013121660 has 96 divisors (see below), whose sum is σ = 15604710912. Its totient is φ = 1895328000.

The previous prime is 6013121657. The next prime is 6013121669. The reversal of 6013121660 is 661213106.

It is a super-2 number, since 2×6013121660² = 72315264195922311200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6013121669) 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, 450239 + ... + 463401.

It is an arithmetic number, because the mean of its divisors is an integer number (162549072).

Almost surely, 2^6013121660 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 6013121660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7802355456).

6013121660 is an abundant number, since it is smaller than the sum of its proper divisors (9591589252).

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

6013121660 is a wasteful number, since it uses less digits than its factorization.

6013121660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13443 (or 13441 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 6013121660 is about 77544.3206173089. The cubic root of 6013121660 is about 1818.4442749501. Note that the first 3 decimals are identical.

Adding to 6013121660 its reverse (661213106), we get a palindrome (6674334766).

The spelling of 6013121660 in words is "six billion, thirteen million, one hundred twenty-one thousand, six hundred sixty".