20405048023305 has 24 divisors (see below), whose sum is σ = 38584090808640. Its totient is φ = 9893356617120.

The previous prime is 20405048023303. The next prime is 20405048023319. The reversal of 20405048023305 is 50332084050402.

20405048023305 is a `hidden beast` number, since 2 + 0 + 40 + 504 + 80 + 2 + 3 + 30 + 5 = 666.

It is not a de Polignac number, because 20405048023305 - 2¹ = 20405048023303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20405048023305.

It is not an unprimeable number, because it can be changed into a prime (20405048023303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20611159125 + ... + 20611160114.

It is an arithmetic number, because the mean of its divisors is an integer number (1607670450360).

Almost surely, 2^{20405048023305} is an apocalyptic number.

It is an amenable number.

20405048023305 is a deficient number, since it is larger than the sum of its proper divisors (18179042785335).

20405048023305 is a wasteful number, since it uses less digits than its factorization.

20405048023305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41222319261 (or 41222319258 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 20405048023305 in words is "twenty trillion, four hundred five billion, forty-eight million, twenty-three thousand, three hundred five".