26015907889 has 2 divisors, whose sum is σ = 26015907890. Its totient is φ = 26015907888.

The previous prime is 26015907847. The next prime is 26015907893. The reversal of 26015907889 is 98870951062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25605440289 + 410467600 = 160017^2 + 20260^2 .

It is a cyclic number.

It is not a de Polignac number, because 26015907889 - 2¹¹ = 26015905841 is a prime.

It is not a weakly prime, because it can be changed into another prime (26015907809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13007953944 + 13007953945.

It is an arithmetic number, because the mean of its divisors is an integer number (13007953945).

Almost surely, 2^26015907889 is an apocalyptic number.

It is an amenable number.

26015907889 is a deficient number, since it is larger than the sum of its proper divisors (1).

26015907889 is an equidigital number, since it uses as much as digits as its factorization.

26015907889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 26015907889 in words is "twenty-six billion, fifteen million, nine hundred seven thousand, eight hundred eighty-nine".