105404502051 has 24 divisors (see below), whose sum is σ = 159050750976. Its totient is φ = 67138228080.

The previous prime is 105404502001. The next prime is 105404502079. The reversal of 105404502051 is 150205404501.

105404502051 is a `hidden beast` number, since 1 + 0 + 5 + 4 + 0 + 450 + 205 + 1 = 666.

It is not a de Polignac number, because 105404502051 - 2⁶ = 105404501987 is a prime.

It is a super-2 number, since 2×105404502051² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105404502001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105555 + ... + 471116.

It is an arithmetic number, because the mean of its divisors is an integer number (6627114624).

Almost surely, 2^105404502051 is an apocalyptic number.

105404502051 is a deficient number, since it is larger than the sum of its proper divisors (53646248925).

105404502051 is a wasteful number, since it uses less digits than its factorization.

105404502051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577583 (or 577580 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 105404502051 its reverse (150205404501), we get a palindrome (255609906552).

The spelling of 105404502051 in words is "one hundred five billion, four hundred four million, five hundred two thousand, fifty-one".