26553996487 has 2 divisors, whose sum is σ = 26553996488. Its totient is φ = 26553996486.

The previous prime is 26553996463. The next prime is 26553996493. The reversal of 26553996487 is 78469935562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26553996487 - 2¹⁹ = 26553472199 is a prime.

It is a super-2 number, since 2×26553996487² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26553996187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13276998243 + 13276998244.

It is an arithmetic number, because the mean of its divisors is an integer number (13276998244).

Almost surely, 2^26553996487 is an apocalyptic number.

26553996487 is a deficient number, since it is larger than the sum of its proper divisors (1).

26553996487 is an equidigital number, since it uses as much as digits as its factorization.

26553996487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97977600, while the sum is 64.

The spelling of 26553996487 in words is "twenty-six billion, five hundred fifty-three million, nine hundred ninety-six thousand, four hundred eighty-seven".