2665130060021 has 32 divisors (see below), whose sum is σ = 3296272586880. Its totient is φ = 2118494995200.

The previous prime is 2665130060011. The next prime is 2665130060027. The reversal of 2665130060021 is 1200600315662.

It is a cyclic number.

It is not a de Polignac number, because 2665130060021 - 2¹⁴ = 2665130043637 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2665130060021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665130060027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22930571 + ... + 23046503.

It is an arithmetic number, because the mean of its divisors is an integer number (103008518340).

Almost surely, 2^{2665130060021} is an apocalyptic number.

It is an amenable number.

2665130060021 is a deficient number, since it is larger than the sum of its proper divisors (631142526859).

2665130060021 is a wasteful number, since it uses less digits than its factorization.

2665130060021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124437.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 2665130060021 its reverse (1200600315662), we get a palindrome (3865730375683).

The spelling of 2665130060021 in words is "two trillion, six hundred sixty-five billion, one hundred thirty million, sixty thousand, twenty-one".