20012835249 has 24 divisors (see below), whose sum is σ = 31979548224. Its totient is φ = 11958156000.

The previous prime is 20012835247. The next prime is 20012835257. The reversal of 20012835249 is 94253821002.

It is a happy number.

20012835249 is a `hidden beast` number, since 2 + 0 + 0 + 128 + 3 + 524 + 9 = 666.

It is not a de Polignac number, because 20012835249 - 2¹ = 20012835247 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20012835247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1416562 + ... + 1430619.

It is an arithmetic number, because the mean of its divisors is an integer number (1332481176).

Almost surely, 2^20012835249 is an apocalyptic number.

It is an amenable number.

20012835249 is a deficient number, since it is larger than the sum of its proper divisors (11966712975).

20012835249 is a wasteful number, since it uses less digits than its factorization.

20012835249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847269 (or 2847266 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 20012835249 in words is "twenty billion, twelve million, eight hundred thirty-five thousand, two hundred forty-nine".