26604514987 has 2 divisors, whose sum is σ = 26604514988. Its totient is φ = 26604514986.

The previous prime is 26604514967. The next prime is 26604515057. The reversal of 26604514987 is 78941540662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26604514987 - 2¹¹ = 26604512939 is a prime.

It is a super-2 number, since 2×26604514987² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26604514927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13302257493 + 13302257494.

It is an arithmetic number, because the mean of its divisors is an integer number (13302257494).

Almost surely, 2^26604514987 is an apocalyptic number.

26604514987 is a deficient number, since it is larger than the sum of its proper divisors (1).

26604514987 is an equidigital number, since it uses as much as digits as its factorization.

26604514987 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 52.

The spelling of 26604514987 in words is "twenty-six billion, six hundred four million, five hundred fourteen thousand, nine hundred eighty-seven".