26502640136 has 64 divisors (see below), whose sum is σ = 57338668800. Its totient is φ = 11249206272.

The previous prime is 26502640133. The next prime is 26502640139. The reversal of 26502640136 is 63104620562.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26502640133) and next prime (26502640139).

It is a junction number, because it is equal to n+sod(n) for n = 26502640096 and 26502640105.

It is not an unprimeable number, because it can be changed into a prime (26502640133) 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, 3502325 + ... + 3509883.

It is an arithmetic number, because the mean of its divisors is an integer number (895916700).

Almost surely, 2^26502640136 is an apocalyptic number.

It is an amenable number.

26502640136 is an abundant number, since it is smaller than the sum of its proper divisors (30836028664).

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

26502640136 is a wasteful number, since it uses less digits than its factorization.

26502640136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8166 (or 8162 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 26502640136 in words is "twenty-six billion, five hundred two million, six hundred forty thousand, one hundred thirty-six".