26275533989 has 2 divisors, whose sum is σ = 26275533990. Its totient is φ = 26275533988.

The previous prime is 26275533971. The next prime is 26275533997. The reversal of 26275533989 is 98933557262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24918201025 + 1357332964 = 157855^2 + 36842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26275533989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26275533929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13137766994 + 13137766995.

It is an arithmetic number, because the mean of its divisors is an integer number (13137766995).

Almost surely, 2^26275533989 is an apocalyptic number.

It is an amenable number.

26275533989 is a deficient number, since it is larger than the sum of its proper divisors (1).

26275533989 is an equidigital number, since it uses as much as digits as its factorization.

26275533989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24494400, while the sum is 59.

The spelling of 26275533989 in words is "twenty-six billion, two hundred seventy-five million, five hundred thirty-three thousand, nine hundred eighty-nine".