2640663011123 has 2 divisors, whose sum is σ = 2640663011124. Its totient is φ = 2640663011122.

The previous prime is 2640663011101. The next prime is 2640663011159. The reversal of 2640663011123 is 3211103660462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2640663011123 - 2²⁸ = 2640394575667 is a prime.

It is a super-2 number, since 2×2640663011123² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2640663011323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320331505561 + 1320331505562.

It is an arithmetic number, because the mean of its divisors is an integer number (1320331505562).

Almost surely, 2^{2640663011123} is an apocalyptic number.

2640663011123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2640663011123 is an equidigital number, since it uses as much as digits as its factorization.

2640663011123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

Adding to 2640663011123 its reverse (3211103660462), we get a palindrome (5851766671585).

The spelling of 2640663011123 in words is "two trillion, six hundred forty billion, six hundred sixty-three million, eleven thousand, one hundred twenty-three".