26195265138 has 32 divisors (see below), whose sum is σ = 59935896576. Its totient is φ = 7476735888.

The previous prime is 26195265119. The next prime is 26195265139. The reversal of 26195265138 is 83156259162.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26195265139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275956 + ... + 358527.

It is an arithmetic number, because the mean of its divisors is an integer number (1872996768).

Almost surely, 2^26195265138 is an apocalyptic number.

26195265138 is an abundant number, since it is smaller than the sum of its proper divisors (33740631438).

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

26195265138 is a wasteful number, since it uses less digits than its factorization.

26195265138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635478.

The product of its digits is 777600, while the sum is 48.

The spelling of 26195265138 in words is "twenty-six billion, one hundred ninety-five million, two hundred sixty-five thousand, one hundred thirty-eight".