105918211504 has 20 divisors (see below), whose sum is σ = 234533182864. Its totient is φ = 45393519168.

The previous prime is 105918211501. The next prime is 105918211519. The reversal of 105918211504 is 405112819501.

It is a happy number.

It is a super-2 number, since 2×105918211504² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105918211501) 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, 472849047 + ... + 472849270.

Almost surely, 2^105918211504 is an apocalyptic number.

105918211504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

105918211504 is an abundant number, since it is smaller than the sum of its proper divisors (128614971360).

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

105918211504 is an equidigital number, since it uses as much as digits as its factorization.

105918211504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945698332 (or 945698326 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 37.

The spelling of 105918211504 in words is "one hundred five billion, nine hundred eighteen million, two hundred eleven thousand, five hundred four".