23212317770505 has 24 divisors (see below), whose sum is σ = 40234924591368. Its totient is φ = 12379828824576.

The previous prime is 23212317770501. The next prime is 23212317770563. The reversal of 23212317770505 is 50507771321232.

23212317770505 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 2 + 3 + 1 + 77 + 70 + 505 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 58792670784 + 23153525099721 = 242472^2 + 4811811^2 .

It is not a de Polignac number, because 23212317770505 - 2² = 23212317770501 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (23212317770501) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6537279 + ... + 9442491.

It is an arithmetic number, because the mean of its divisors is an integer number (1676455191307).

Almost surely, 2^{23212317770505} is an apocalyptic number.

It is an amenable number.

23212317770505 is a deficient number, since it is larger than the sum of its proper divisors (17022606820863).

23212317770505 is a wasteful number, since it uses less digits than its factorization.

23212317770505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082777 (or 3082774 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 45.

The spelling of 23212317770505 in words is "twenty-three trillion, two hundred twelve billion, three hundred seventeen million, seven hundred seventy thousand, five hundred five".