100665043365 has 16 divisors (see below), whose sum is σ = 161259792768. Its totient is φ = 53622782016.

The previous prime is 100665043357. The next prime is 100665043387. The reversal of 100665043365 is 563340566001.

It is a happy number.

It is not a de Polignac number, because 100665043365 - 2³ = 100665043357 is a prime.

It is a congruent number.

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, 4064814 + ... + 4089503.

It is an arithmetic number, because the mean of its divisors is an integer number (10078737048).

Almost surely, 2^100665043365 is an apocalyptic number.

100665043365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100665043365 is a deficient number, since it is larger than the sum of its proper divisors (60594749403).

100665043365 is an equidigital number, since it uses as much as digits as its factorization.

100665043365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8155148.

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 100665043365 in words is "one hundred billion, six hundred sixty-five million, forty-three thousand, three hundred sixty-five".