2640414025679 has 2 divisors, whose sum is σ = 2640414025680. Its totient is φ = 2640414025678.

The previous prime is 2640414025673. The next prime is 2640414025741. The reversal of 2640414025679 is 9765204140462.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2640414025679 is a prime.

It is a super-2 number, since 2×2640414025679² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2640414025673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320207012839 + 1320207012840.

It is an arithmetic number, because the mean of its divisors is an integer number (1320207012840).

Almost surely, 2^{2640414025679} is an apocalyptic number.

2640414025679 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640414025679 is an equidigital number, since it uses as much as digits as its factorization.

2640414025679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 2640414025679 in words is "two trillion, six hundred forty billion, four hundred fourteen million, twenty-five thousand, six hundred seventy-nine".