20503157350 has 48 divisors (see below), whose sum is σ = 41084714160. Its totient is φ = 7567574400.

The previous prime is 20503157347. The next prime is 20503157399. The reversal of 20503157350 is 5375130502.

It is a super-2 number, since 2×20503157350² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2686540 + ... + 2694160.

It is an arithmetic number, because the mean of its divisors is an integer number (855931545).

Almost surely, 2^20503157350 is an apocalyptic number.

20503157350 is an abundant number, since it is smaller than the sum of its proper divisors (20581556810).

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

20503157350 is a wasteful number, since it uses less digits than its factorization.

20503157350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11785 (or 11780 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 31.

Adding to 20503157350 its reverse (5375130502), we get a palindrome (25878287852).

The spelling of 20503157350 in words is "twenty billion, five hundred three million, one hundred fifty-seven thousand, three hundred fifty".