20735973371403 has 12 divisors (see below), whose sum is σ = 30682497184248. Its totient is φ = 13486811948640.

The previous prime is 20735973371291. The next prime is 20735973371419. The reversal of 20735973371403 is 30417337953702.

It is a happy number.

20735973371403 is a `hidden beast` number, since 2 + 0 + 7 + 3 + 597 + 3 + 3 + 7 + 1 + 40 + 3 = 666.

It is not a de Polignac number, because 20735973371403 - 2¹⁰ = 20735973370379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20735973371403.

It is not an unprimeable number, because it can be changed into a prime (20735973370403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28097524525 + ... + 28097525262.

It is an arithmetic number, because the mean of its divisors is an integer number (2556874765354).

Almost surely, 2^{20735973371403} is an apocalyptic number.

20735973371403 is a deficient number, since it is larger than the sum of its proper divisors (9946523812845).

20735973371403 is a wasteful number, since it uses less digits than its factorization.

20735973371403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56195049834 (or 56195049831 counting only the distinct ones).

The product of its (nonzero) digits is 10001880, while the sum is 54.

The spelling of 20735973371403 in words is "twenty trillion, seven hundred thirty-five billion, nine hundred seventy-three million, three hundred seventy-one thousand, four hundred three".