109639233755 has 4 divisors (see below), whose sum is σ = 131567080512. Its totient is φ = 87711387000.

The previous prime is 109639233751. The next prime is 109639233797. The reversal of 109639233755 is 557332936901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 109639233755 - 2² = 109639233751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109639233697 and 109639233706.

It is not an unprimeable number, because it can be changed into a prime (109639233751) 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, 10963923371 + ... + 10963923380.

It is an arithmetic number, because the mean of its divisors is an integer number (32891770128).

Almost surely, 2^109639233755 is an apocalyptic number.

109639233755 is a deficient number, since it is larger than the sum of its proper divisors (21927846757).

109639233755 is an equidigital number, since it uses as much as digits as its factorization.

109639233755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21927846756.

The product of its (nonzero) digits is 4592700, while the sum is 53.

The spelling of 109639233755 in words is "one hundred nine billion, six hundred thirty-nine million, two hundred thirty-three thousand, seven hundred fifty-five".