2660913974249 has 2 divisors, whose sum is σ = 2660913974250. Its totient is φ = 2660913974248.

The previous prime is 2660913974197. The next prime is 2660913974269. The reversal of 2660913974249 is 9424793190662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1814293159849 + 846620814400 = 1346957^2 + 920120^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660913974249 - 2²⁰ = 2660912925673 is a prime.

It is a super-2 number, since 2×2660913974249² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2660913974191 and 2660913974200.

It is not a weakly prime, because it can be changed into another prime (2660913974269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330456987124 + 1330456987125.

It is an arithmetic number, because the mean of its divisors is an integer number (1330456987125).

Almost surely, 2^{2660913974249} is an apocalyptic number.

It is an amenable number.

2660913974249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660913974249 is an equidigital number, since it uses as much as digits as its factorization.

2660913974249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35271936, while the sum is 62.

The spelling of 2660913974249 in words is "two trillion, six hundred sixty billion, nine hundred thirteen million, nine hundred seventy-four thousand, two hundred forty-nine".