26391253876 has 12 divisors (see below), whose sum is σ = 49737363172. Its totient is φ = 12180578688.

The previous prime is 26391253817. The next prime is 26391253877. The reversal of 26391253876 is 67835219362.

It can be written as a sum of positive squares in 2 ways, for example, as 5532384400 + 20858869476 = 74380^2 + 144426^2 .

It is a super-2 number, since 2×26391253876² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52), and also a Moran number because the ratio is a prime number: 507524113 = 26391253876 / (2 + 6 + 3 + 9 + 1 + 2 + 5 + 3 + 8 + 7 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26391253877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253762005 + ... + 253762108.

Almost surely, 2^26391253876 is an apocalyptic number.

26391253876 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

26391253876 is a deficient number, since it is larger than the sum of its proper divisors (23346109296).

26391253876 is a wasteful number, since it uses less digits than its factorization.

26391253876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507524130 (or 507524128 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The spelling of 26391253876 in words is "twenty-six billion, three hundred ninety-one million, two hundred fifty-three thousand, eight hundred seventy-six".