26026400538 has 12 divisors (see below), whose sum is σ = 56390534538. Its totient is φ = 8675466840.

The previous prime is 26026400531. The next prime is 26026400539. The reversal of 26026400538 is 83500462062.

26026400538 is a `hidden beast` number, since 2 + 6 + 0 + 2 + 640 + 0 + 5 + 3 + 8 = 666.

26026400538 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 21784874409 + 4241526129 = 147597^2 + 65127^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26026400531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 722955553 + ... + 722955588.

Almost surely, 2^26026400538 is an apocalyptic number.

26026400538 is an abundant number, since it is smaller than the sum of its proper divisors (30364134000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26026400538 is a wasteful number, since it uses less digits than its factorization.

26026400538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445911149 (or 1445911146 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 26026400538 in words is "twenty-six billion, twenty-six million, four hundred thousand, five hundred thirty-eight".