105404143504420 has 12 divisors (see below), whose sum is σ = 221348701359324. Its totient is φ = 42161657401760.

The previous prime is 105404143504417. The next prime is 105404143504433. The reversal of 105404143504420 is 24405341404501.

It can be written as a sum of positive squares in 2 ways, for example, as 71174599742016 + 34229543762404 = 8436504^2 + 5850602^2 .

It is a super-2 number, since 2×105404143504420² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105404143504420.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2635103587591 + ... + 2635103587630.

It is an arithmetic number, because the mean of its divisors is an integer number (18445725113277).

Almost surely, 2^{105404143504420} is an apocalyptic number.

105404143504420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105404143504420 is an abundant number, since it is smaller than the sum of its proper divisors (115944557854904).

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

105404143504420 is a wasteful number, since it uses less digits than its factorization.

105404143504420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270207175230 (or 5270207175228 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 105404143504420 its reverse (24405341404501), we get a palindrome (129809484908921).

The spelling of 105404143504420 in words is "one hundred five trillion, four hundred four billion, one hundred forty-three million, five hundred four thousand, four hundred twenty".