26413487869 has 2 divisors, whose sum is σ = 26413487870. Its totient is φ = 26413487868.

The previous prime is 26413487861. The next prime is 26413487879. The reversal of 26413487869 is 96878431462.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23202905625 + 3210582244 = 152325^2 + 56662^2 .

It is a cyclic number.

It is not a de Polignac number, because 26413487869 - 2³ = 26413487861 is a prime.

It is a super-2 number, since 2×26413487869² (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 (26413487861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13206743934 + 13206743935.

It is an arithmetic number, because the mean of its divisors is an integer number (13206743935).

Almost surely, 2^26413487869 is an apocalyptic number.

It is an amenable number.

26413487869 is a deficient number, since it is larger than the sum of its proper divisors (1).

26413487869 is an equidigital number, since it uses as much as digits as its factorization.

26413487869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13934592, while the sum is 58.

The spelling of 26413487869 in words is "twenty-six billion, four hundred thirteen million, four hundred eighty-seven thousand, eight hundred sixty-nine".