26091166650 has 48 divisors (see below), whose sum is σ = 67519410624. Its totient is φ = 6655137280.

The previous prime is 26091166601. The next prime is 26091166663. The reversal of 26091166650 is 5666119062.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3777879 + ... + 3784778.

It is an arithmetic number, because the mean of its divisors is an integer number (1406654388).

Almost surely, 2^26091166650 is an apocalyptic number.

26091166650 is an abundant number, since it is smaller than the sum of its proper divisors (41428243974).

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

26091166650 is a wasteful number, since it uses less digits than its factorization.

26091166650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7562695 (or 7562690 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 26091166650 in words is "twenty-six billion, ninety-one million, one hundred sixty-six thousand, six hundred fifty".