2665655848740 has 288 divisors, whose sum is σ = 8282052624384. Its totient is φ = 639273113600.

The previous prime is 2665655848733. The next prime is 2665655848759. The reversal of 2665655848740 is 478485565662.

It is a super-2 number, since 2×2665655848740² (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 95 ways as a sum of consecutive naturals, for example, 459038917 + ... + 459044723.

It is an arithmetic number, because the mean of its divisors is an integer number (28757127168).

Almost surely, 2^{2665655848740} is an apocalyptic number.

2665655848740 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 2665655848740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4141026312192).

2665655848740 is an abundant number, since it is smaller than the sum of its proper divisors (5616396775644).

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

2665655848740 is a wasteful number, since it uses less digits than its factorization.

2665655848740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7027 (or 7008 counting only the distinct ones).

The product of its (nonzero) digits is 387072000, while the sum is 66.

The spelling of 2665655848740 in words is "two trillion, six hundred sixty-five billion, six hundred fifty-five million, eight hundred forty-eight thousand, seven hundred forty".