2540166529987 has 2 divisors, whose sum is σ = 2540166529988. Its totient is φ = 2540166529986.

The previous prime is 2540166529939. The next prime is 2540166529991. The reversal of 2540166529987 is 7899256610452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2540166529987 is a prime.

It is not a weakly prime, because it can be changed into another prime (2541166529987) 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, 1270083264993 + 1270083264994.

It is an arithmetic number, because the mean of its divisors is an integer number (1270083264994).

Almost surely, 2^{2540166529987} is an apocalyptic number.

2540166529987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2540166529987 is an equidigital number, since it uses as much as digits as its factorization.

2540166529987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65318400, while the sum is 64.

The spelling of 2540166529987 in words is "two trillion, five hundred forty billion, one hundred sixty-six million, five hundred twenty-nine thousand, nine hundred eighty-seven".