20538253848 has 64 divisors (see below), whose sum is σ = 59261771520. Its totient is φ = 5809968000.

The previous prime is 20538253847. The next prime is 20538253909. The reversal of 20538253848 is 84835283502.

It is a super-2 number, since 2×20538253848² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20538253797 and 20538253806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20538253847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 588238 + ... + 622173.

It is an arithmetic number, because the mean of its divisors is an integer number (925965180).

Almost surely, 2^20538253848 is an apocalyptic number.

20538253848 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20538253848 is an abundant number, since it is smaller than the sum of its proper divisors (38723517672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20538253848 is a wasteful number, since it uses less digits than its factorization.

20538253848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210528 (or 1210524 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 48.

The spelling of 20538253848 in words is "twenty billion, five hundred thirty-eight million, two hundred fifty-three thousand, eight hundred forty-eight".