26860191090 has 32 divisors (see below), whose sum is σ = 64562031936. Its totient is φ = 7151876160.

The previous prime is 26860191067. The next prime is 26860191157. The reversal of 26860191090 is 9019106862.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 657432 + ... + 697091.

It is an arithmetic number, because the mean of its divisors is an integer number (2017563498).

Almost surely, 2^26860191090 is an apocalyptic number.

26860191090 is an abundant number, since it is smaller than the sum of its proper divisors (37701840846).

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

26860191090 is a wasteful number, since it uses less digits than its factorization.

26860191090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355194.

The product of its (nonzero) digits is 46656, while the sum is 42.

The spelling of 26860191090 in words is "twenty-six billion, eight hundred sixty million, one hundred ninety-one thousand, ninety".