23790805605 has 72 divisors (see below), whose sum is σ = 47999460600. Its totient is φ = 10869126912.

The previous prime is 23790805583. The next prime is 23790805637. The reversal of 23790805605 is 50650809732.

It is a happy number.

23790805605 is a `hidden beast` number, since 2 + 3 + 7 + 9 + 0 + 80 + 560 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3703696164 + 20087109441 = 60858^2 + 141729^2 .

It is not a de Polignac number, because 23790805605 - 2¹¹ = 23790803557 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6412491 + ... + 6416199.

It is an arithmetic number, because the mean of its divisors is an integer number (666659175).

Almost surely, 2^23790805605 is an apocalyptic number.

It is an amenable number.

23790805605 is an abundant number, since it is smaller than the sum of its proper divisors (24208654995).

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

23790805605 is a wasteful number, since it uses less digits than its factorization.

23790805605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6643 (or 6633 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 23790805605 in words is "twenty-three billion, seven hundred ninety million, eight hundred five thousand, six hundred five".