26235117138 has 16 divisors (see below), whose sum is σ = 52476281856. Its totient is φ = 8744031120.

The previous prime is 26235117113. The next prime is 26235117143. The reversal of 26235117138 is 83171153262.

It is a happy number.

It is a super-2 number, since 2×26235117138² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26235117096 and 26235117105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194581 + ... + 300552.

It is an arithmetic number, because the mean of its divisors is an integer number (3279767616).

Almost surely, 2^26235117138 is an apocalyptic number.

26235117138 is an abundant number, since it is smaller than the sum of its proper divisors (26241164718).

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

26235117138 is a wasteful number, since it uses less digits than its factorization.

26235117138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503969.

The product of its digits is 60480, while the sum is 39.

The spelling of 26235117138 in words is "twenty-six billion, two hundred thirty-five million, one hundred seventeen thousand, one hundred thirty-eight".