20537588847 has 8 divisors (see below), whose sum is σ = 27384148144. Its totient is φ = 13691377728.

The previous prime is 20537588843. The next prime is 20537588857. The reversal of 20537588847 is 74888573502.

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

It is not a de Polignac number, because 20537588847 - 2² = 20537588843 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20537588843) 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 7 ways as a sum of consecutive naturals, for example, 123003 + ... + 237075.

It is an arithmetic number, because the mean of its divisors is an integer number (3423018518).

Almost surely, 2^20537588847 is an apocalyptic number.

20537588847 is a deficient number, since it is larger than the sum of its proper divisors (6846559297).

20537588847 is a wasteful number, since it uses less digits than its factorization.

20537588847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174089.

The product of its (nonzero) digits is 15052800, while the sum is 57.

The spelling of 20537588847 in words is "twenty billion, five hundred thirty-seven million, five hundred eighty-eight thousand, eight hundred forty-seven".