20503157022 has 128 divisors (see below), whose sum is σ = 47748096000. Its totient is φ = 6514110720.

The previous prime is 20503157021. The next prime is 20503157033. The reversal of 20503157022 is 22075130502.

20503157022 is a `hidden beast` number, since 2 + 0 + 503 + 157 + 0 + 2 + 2 = 666.

20503157022 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20503157021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57111679 + ... + 57112037.

It is an arithmetic number, because the mean of its divisors is an integer number (373032000).

Almost surely, 2^20503157022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20503157022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23874048000).

20503157022 is an abundant number, since it is smaller than the sum of its proper divisors (27244938978).

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

20503157022 is a wasteful number, since it uses less digits than its factorization.

20503157022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

Adding to 20503157022 its reverse (22075130502), we get a palindrome (42578287524).

The spelling of 20503157022 in words is "twenty billion, five hundred three million, one hundred fifty-seven thousand, twenty-two".