23720518605 has 16 divisors (see below), whose sum is σ = 43374662784. Its totient is φ = 10843665600.

The previous prime is 23720518583. The next prime is 23720518637. The reversal of 23720518605 is 50681502732.

It is not a de Polignac number, because 23720518605 - 2⁵ = 23720518573 is a prime.

It is a super-2 number, since 2×23720518605² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112954746 + ... + 112954955.

It is an arithmetic number, because the mean of its divisors is an integer number (2710916424).

Almost surely, 2^23720518605 is an apocalyptic number.

It is an amenable number.

23720518605 is a deficient number, since it is larger than the sum of its proper divisors (19654144179).

23720518605 is a wasteful number, since it uses less digits than its factorization.

23720518605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225909716.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 23720518605 in words is "twenty-three billion, seven hundred twenty million, five hundred eighteen thousand, six hundred five".