26118491912 has 8 divisors (see below), whose sum is σ = 48972172350. Its totient is φ = 13059245952.

The previous prime is 26118491899. The next prime is 26118491963. The reversal of 26118491912 is 21919481162.

It can be written as a sum of positive squares in only one way, i.e., 17136380836 + 8982111076 = 130906^2 + 94774^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1632405737 + ... + 1632405752.

Almost surely, 2^26118491912 is an apocalyptic number.

It is an amenable number.

26118491912 is a deficient number, since it is larger than the sum of its proper divisors (22853680438).

26118491912 is a wasteful number, since it uses less digits than its factorization.

26118491912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264811495 (or 3264811491 counting only the distinct ones).

The product of its digits is 62208, while the sum is 44.

The spelling of 26118491912 in words is "twenty-six billion, one hundred eighteen million, four hundred ninety-one thousand, nine hundred twelve".