20040105245 has 8 divisors (see below), whose sum is σ = 24117034200. Its totient is φ = 15986145600.

The previous prime is 20040105227. The next prime is 20040105269. The reversal of 20040105245 is 54250104002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3679392964 + 16360712281 = 60658^2 + 127909^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20040105245 - 2⁶ = 20040105181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20040105245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5740406 + ... + 5743895.

It is an arithmetic number, because the mean of its divisors is an integer number (3014629275).

Almost surely, 2^20040105245 is an apocalyptic number.

It is an amenable number.

20040105245 is a deficient number, since it is larger than the sum of its proper divisors (4076928955).

20040105245 is a wasteful number, since it uses less digits than its factorization.

20040105245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11484655.

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 20040105245 its reverse (54250104002), we get a palindrome (74290209247).

The spelling of 20040105245 in words is "twenty billion, forty million, one hundred five thousand, two hundred forty-five".