2660790705739 has 4 divisors (see below), whose sum is σ = 2662660553056. Its totient is φ = 2658920858424.

The previous prime is 2660790705721. The next prime is 2660790705761. The reversal of 2660790705739 is 9375070970662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2660790705739 - 2⁹ = 2660790705227 is a prime.

It is a super-2 number, since 2×2660790705739² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2660790708739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934921524 + ... + 934924369.

It is an arithmetic number, because the mean of its divisors is an integer number (665665138264).

Almost surely, 2^{2660790705739} is an apocalyptic number.

2660790705739 is a deficient number, since it is larger than the sum of its proper divisors (1869847317).

2660790705739 is a wasteful number, since it uses less digits than its factorization.

2660790705739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869847316.

The product of its (nonzero) digits is 30005640, while the sum is 61.

The spelling of 2660790705739 in words is "two trillion, six hundred sixty billion, seven hundred ninety million, seven hundred five thousand, seven hundred thirty-nine".