20236552047 has 24 divisors (see below), whose sum is σ = 30513659904. Its totient is φ = 12899310864.

The previous prime is 20236552009. The next prime is 20236552087. The reversal of 20236552047 is 74025563202.

20236552047 is a `hidden beast` number, since 202 + 365 + 52 + 0 + 47 = 666.

It is not a de Polignac number, because 20236552047 - 2¹⁶ = 20236486511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20236552087) 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, 538018 + ... + 574400.

It is an arithmetic number, because the mean of its divisors is an integer number (1271402496).

Almost surely, 2^20236552047 is an apocalyptic number.

20236552047 is a deficient number, since it is larger than the sum of its proper divisors (10277107857).

20236552047 is a wasteful number, since it uses less digits than its factorization.

20236552047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39099 (or 39096 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The spelling of 20236552047 in words is "twenty billion, two hundred thirty-six million, five hundred fifty-two thousand, forty-seven".