26123250491881 has 4 divisors (see below), whose sum is σ = 27259043991552. Its totient is φ = 24987456992212.

The previous prime is 26123250491873. The next prime is 26123250491953. The reversal of 26123250491881 is 18819405232162.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26123250491881 - 2³ = 26123250491873 is a prime.

It is a super-2 number, since 2×26123250491881² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26123250461881) 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, 567896749801 + ... + 567896749846.

It is an arithmetic number, because the mean of its divisors is an integer number (6814760997888).

Almost surely, 2^{26123250491881} is an apocalyptic number.

It is an amenable number.

26123250491881 is a deficient number, since it is larger than the sum of its proper divisors (1135793499671).

26123250491881 is a wasteful number, since it uses less digits than its factorization.

26123250491881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135793499670.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 26123250491881 in words is "twenty-six trillion, one hundred twenty-three billion, two hundred fifty million, four hundred ninety-one thousand, eight hundred eighty-one".