20293654839205 has 16 divisors (see below), whose sum is σ = 26566330388544. Its totient is φ = 14758970964480.

The previous prime is 20293654839197. The next prime is 20293654839347. The reversal of 20293654839205 is 50293845639202.

It is not a de Polignac number, because 20293654839205 - 2³ = 20293654839197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20293654839205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24444742 + ... + 25261288.

It is an arithmetic number, because the mean of its divisors is an integer number (1660395649284).

Almost surely, 2^{20293654839205} is an apocalyptic number.

It is an amenable number.

20293654839205 is a deficient number, since it is larger than the sum of its proper divisors (6272675549339).

20293654839205 is a wasteful number, since it uses less digits than its factorization.

20293654839205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268436.

The product of its (nonzero) digits is 27993600, while the sum is 58.

The spelling of 20293654839205 in words is "twenty trillion, two hundred ninety-three billion, six hundred fifty-four million, eight hundred thirty-nine thousand, two hundred five".