20373053503 has 6 divisors (see below), whose sum is σ = 22393521752. Its totient is φ = 18520957620.

The previous prime is 20373053497. The next prime is 20373053507. The reversal of 20373053503 is 30535037302.

It is a happy number.

It is not a de Polignac number, because 20373053503 - 2⁹ = 20373052991 is a prime.

It is a super-2 number, since 2×20373053503² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20373053507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84186051 + ... + 84186292.

Almost surely, 2^20373053503 is an apocalyptic number.

20373053503 is a deficient number, since it is larger than the sum of its proper divisors (2020468249).

20373053503 is a wasteful number, since it uses less digits than its factorization.

20373053503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168372365 (or 168372354 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 31.

The spelling of 20373053503 in words is "twenty billion, three hundred seventy-three million, fifty-three thousand, five hundred three".