2660725715620 has 96 divisors (see below), whose sum is σ = 6420337136640. Its totient is φ = 907316014080.

The previous prime is 2660725715581. The next prime is 2660725715653. The reversal of 2660725715620 is 265175270662.

It is a super-2 number, since 2×2660725715620² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27422232 + ... + 27519088.

It is an arithmetic number, because the mean of its divisors is an integer number (66878511840).

Almost surely, 2^{2660725715620} is an apocalyptic number.

2660725715620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2660725715620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3210168568320).

2660725715620 is an abundant number, since it is smaller than the sum of its proper divisors (3759611421020).

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

2660725715620 is a wasteful number, since it uses less digits than its factorization.

2660725715620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97933 (or 97931 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 2660725715620 in words is "two trillion, six hundred sixty billion, seven hundred twenty-five million, seven hundred fifteen thousand, six hundred twenty".