26091388080 has 120 divisors (see below), whose sum is σ = 90450222720. Its totient is φ = 6733255680.

The previous prime is 26091387989. The next prime is 26091388091. The reversal of 26091388080 is 8088319062.

26091388080 is a `hidden beast` number, since 2 + 609 + 1 + 38 + 8 + 0 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 562165 + ... + 606804.

It is an arithmetic number, because the mean of its divisors is an integer number (753751856).

Almost surely, 2^26091388080 is an apocalyptic number.

26091388080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26091388080 is an abundant number, since it is smaller than the sum of its proper divisors (64358834640).

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

26091388080 is a wasteful number, since it uses less digits than its factorization.

26091388080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169019 (or 1169010 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 26091388080 in words is "twenty-six billion, ninety-one million, three hundred eighty-eight thousand, eighty".