20974835838201 has 24 divisors (see below), whose sum is σ = 32830860839040. Its totient is φ = 11875660648992.

The previous prime is 20974835838191. The next prime is 20974835838241. The reversal of 20974835838201 is 10283853847902.

It is not a de Polignac number, because 20974835838201 - 2⁹ = 20974835837689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20974835838241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 654506721 + ... + 654538766.

It is an arithmetic number, because the mean of its divisors is an integer number (1367952534960).

Almost surely, 2^{20974835838201} is an apocalyptic number.

20974835838201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20974835838201 is a deficient number, since it is larger than the sum of its proper divisors (11856025000839).

20974835838201 is a wasteful number, since it uses less digits than its factorization.

20974835838201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309045613 (or 1309045606 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 20974835838201 in words is "twenty trillion, nine hundred seventy-four billion, eight hundred thirty-five million, eight hundred thirty-eight thousand, two hundred one".