20293685503 has 12 divisors (see below), whose sum is σ = 25422859560. Its totient is φ = 16056541872.

The previous prime is 20293685501. The next prime is 20293685507. The reversal of 20293685503 is 30558639202.

It is not a de Polignac number, because 20293685503 - 2¹ = 20293685501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20293685503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20293685501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15928473 + ... + 15929746.

It is an arithmetic number, because the mean of its divisors is an integer number (2118571630).

Almost surely, 2^20293685503 is an apocalyptic number.

20293685503 is a deficient number, since it is larger than the sum of its proper divisors (5129174057).

20293685503 is a wasteful number, since it uses less digits than its factorization.

20293685503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31858246 (or 31858239 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 20293685503 in words is "twenty billion, two hundred ninety-three million, six hundred eighty-five thousand, five hundred three".