26254018164 has 24 divisors (see below), whose sum is σ = 66828410208. Its totient is φ = 7955763040.

The previous prime is 26254018163. The next prime is 26254018169. The reversal of 26254018164 is 46181045262.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26254018163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99446907 + ... + 99447170.

It is an arithmetic number, because the mean of its divisors is an integer number (2784517092).

Almost surely, 2^26254018164 is an apocalyptic number.

It is an amenable number.

26254018164 is an abundant number, since it is smaller than the sum of its proper divisors (40574392044).

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

26254018164 is a wasteful number, since it uses less digits than its factorization.

26254018164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198894095 (or 198894093 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 26254018164 in words is "twenty-six billion, two hundred fifty-four million, eighteen thousand, one hundred sixty-four".