2540220714457 has 2 divisors, whose sum is σ = 2540220714458. Its totient is φ = 2540220714456.

The previous prime is 2540220714439. The next prime is 2540220714461. The reversal of 2540220714457 is 7544170220452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1910465782416 + 629754932041 = 1382196^2 + 793571^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540220714457 - 2⁷ = 2540220714329 is a prime.

It is not a weakly prime, because it can be changed into another prime (2540220715457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270110357228 + 1270110357229.

It is an arithmetic number, because the mean of its divisors is an integer number (1270110357229).

Almost surely, 2^{2540220714457} is an apocalyptic number.

It is an amenable number.

2540220714457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540220714457 is an equidigital number, since it uses as much as digits as its factorization.

2540220714457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 627200, while the sum is 43.

The spelling of 2540220714457 in words is "two trillion, five hundred forty billion, two hundred twenty million, seven hundred fourteen thousand, four hundred fifty-seven".