23904071505 has 24 divisors (see below), whose sum is σ = 41459162472. Its totient is φ = 12741010944.

The previous prime is 23904071479. The next prime is 23904071533. The reversal of 23904071505 is 50517040932.

23904071505 is a `hidden beast` number, since 23 + 90 + 40 + 7 + 1 + 505 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 277922241 + 23626149264 = 16671^2 + 153708^2 .

It is not a de Polignac number, because 23904071505 - 2¹⁶ = 23904005969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23904071505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88584 + ... + 235913.

It is an arithmetic number, because the mean of its divisors is an integer number (1727465103).

Almost surely, 2^23904071505 is an apocalyptic number.

It is an amenable number.

23904071505 is a deficient number, since it is larger than the sum of its proper divisors (17555090967).

23904071505 is a wasteful number, since it uses less digits than its factorization.

23904071505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326145 (or 326142 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 23904071505 in words is "twenty-three billion, nine hundred four million, seventy-one thousand, five hundred five".