110791891638 has 32 divisors (see below), whose sum is σ = 249671877120. Its totient is φ = 36410479560.

The previous prime is 110791891631. The next prime is 110791891697. The reversal of 110791891638 is 836198197011.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110791891631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14444770 + ... + 14452437.

It is an arithmetic number, because the mean of its divisors is an integer number (7802246160).

Almost surely, 2^110791891638 is an apocalyptic number.

110791891638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

110791891638 is an abundant number, since it is smaller than the sum of its proper divisors (138879985482).

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

110791891638 is a wasteful number, since it uses less digits than its factorization.

110791891638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28897289 (or 28897283 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 54.

The spelling of 110791891638 in words is "one hundred ten billion, seven hundred ninety-one million, eight hundred ninety-one thousand, six hundred thirty-eight".