2540298658879 has 2 divisors, whose sum is σ = 2540298658880. Its totient is φ = 2540298658878.

The previous prime is 2540298658873. The next prime is 2540298658889. The reversal of 2540298658879 is 9788568920452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2540298658879 - 2⁹ = 2540298658367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2540298658873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270149329439 + 1270149329440.

It is an arithmetic number, because the mean of its divisors is an integer number (1270149329440).

Almost surely, 2^{2540298658879} is an apocalyptic number.

2540298658879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540298658879 is an equidigital number, since it uses as much as digits as its factorization.

2540298658879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 696729600, while the sum is 73.

The spelling of 2540298658879 in words is "two trillion, five hundred forty billion, two hundred ninety-eight million, six hundred fifty-eight thousand, eight hundred seventy-nine".