26635031138 has 16 divisors (see below), whose sum is σ = 40079816280. Its totient is φ = 13275119616.

The previous prime is 26635031123. The next prime is 26635031149. The reversal of 26635031138 is 83113053662.

It can be written as a sum of positive squares in 4 ways, for example, as 14150767849 + 12484263289 = 118957^2 + 111733^2 .

It is a Curzon number.

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, 2910506 + ... + 2919642.

Almost surely, 2^26635031138 is an apocalyptic number.

26635031138 is a deficient number, since it is larger than the sum of its proper divisors (13444785142).

26635031138 is a wasteful number, since it uses less digits than its factorization.

26635031138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13621.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 26635031138 in words is "twenty-six billion, six hundred thirty-five million, thirty-one thousand, one hundred thirty-eight".