20589780821371 has 32 divisors (see below), whose sum is σ = 22576563475200. Its totient is φ = 18710445726720.

The previous prime is 20589780821279. The next prime is 20589780821381. The reversal of 20589780821371 is 17312808798502.

It is a cyclic number.

It is not a de Polignac number, because 20589780821371 - 2¹³ = 20589780813179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20589780821381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26919795 + ... + 27674083.

It is an arithmetic number, because the mean of its divisors is an integer number (705517608600).

Almost surely, 2^{20589780821371} is an apocalyptic number.

20589780821371 is a deficient number, since it is larger than the sum of its proper divisors (1986782653829).

20589780821371 is a wasteful number, since it uses less digits than its factorization.

20589780821371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754939.

The product of its (nonzero) digits is 13547520, while the sum is 61.

The spelling of 20589780821371 in words is "twenty trillion, five hundred eighty-nine billion, seven hundred eighty million, eight hundred twenty-one thousand, three hundred seventy-one".