2660486115921 has 16 divisors (see below), whose sum is σ = 3669718676160. Its totient is φ = 1712458238400.

The previous prime is 2660486115871. The next prime is 2660486115941. The reversal of 2660486115921 is 1295116840662.

It is not a de Polignac number, because 2660486115921 - 2⁶ = 2660486115857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2660486115941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3829446 + ... + 4470528.

It is an arithmetic number, because the mean of its divisors is an integer number (229357417260).

Almost surely, 2^{2660486115921} is an apocalyptic number.

It is an amenable number.

2660486115921 is a deficient number, since it is larger than the sum of its proper divisors (1009232560239).

2660486115921 is a wasteful number, since it uses less digits than its factorization.

2660486115921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688816.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 2660486115921 in words is "two trillion, six hundred sixty billion, four hundred eighty-six million, one hundred fifteen thousand, nine hundred twenty-one".