20503403350 has 48 divisors (see below), whose sum is σ = 40398561648. Its totient is φ = 7715312640.

The previous prime is 20503403341. The next prime is 20503403363. The reversal of 20503403350 is 5330430502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 2424229 + ... + 2432671.

It is an arithmetic number, because the mean of its divisors is an integer number (841636701).

Almost surely, 2^20503403350 is an apocalyptic number.

20503403350 is a deficient number, since it is larger than the sum of its proper divisors (19895158298).

20503403350 is a wasteful number, since it uses less digits than its factorization.

20503403350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11329 (or 11324 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 25.

Adding to 20503403350 its reverse (5330430502), we get a palindrome (25833833852).

The spelling of 20503403350 in words is "twenty billion, five hundred three million, four hundred three thousand, three hundred fifty".