105918881403 has 4 divisors (see below), whose sum is σ = 141225175208. Its totient is φ = 70612587600.

The previous prime is 105918881371. The next prime is 105918881417. The reversal of 105918881403 is 304188819501.

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 105918881403 - 2⁵ = 105918881371 is a prime.

It is a super-2 number, since 2×105918881403² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105918881423) 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, 17653146898 + ... + 17653146903.

It is an arithmetic number, because the mean of its divisors is an integer number (35306293802).

Almost surely, 2^105918881403 is an apocalyptic number.

105918881403 is a deficient number, since it is larger than the sum of its proper divisors (35306293805).

105918881403 is an equidigital number, since it uses as much as digits as its factorization.

105918881403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35306293804.

The product of its (nonzero) digits is 276480, while the sum is 48.

The spelling of 105918881403 in words is "one hundred five billion, nine hundred eighteen million, eight hundred eighty-one thousand, four hundred three".