109793479638 has 8 divisors (see below), whose sum is σ = 219586959288. Its totient is φ = 36597826544.

The previous prime is 109793479633. The next prime is 109793479651. The reversal of 109793479638 is 836974397901.

It is a sphenic number, since it is the product of 3 distinct primes.

109793479638 is an admirable number.

It is a super-2 number, since 2×109793479638² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109793479633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9149456631 + ... + 9149456642.

It is an arithmetic number, because the mean of its divisors is an integer number (27448369911).

Almost surely, 2^109793479638 is an apocalyptic number.

109793479638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

109793479638 is a wasteful number, since it uses less digits than its factorization.

109793479638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18298913278.

The product of its (nonzero) digits is 61725888, while the sum is 66.

The spelling of 109793479638 in words is "one hundred nine billion, seven hundred ninety-three million, four hundred seventy-nine thousand, six hundred thirty-eight".