20005222327765 has 16 divisors (see below), whose sum is σ = 24136576865280. Its totient is φ = 15917336585280.

The previous prime is 20005222327733. The next prime is 20005222327781. The reversal of 20005222327765 is 56772322250002.

It is not a de Polignac number, because 20005222327765 - 2⁵ = 20005222327733 is a prime.

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, 2987971 + ... + 6995599.

It is an arithmetic number, because the mean of its divisors is an integer number (1508536054080).

Almost surely, 2^{20005222327765} is an apocalyptic number.

It is an amenable number.

20005222327765 is a deficient number, since it is larger than the sum of its proper divisors (4131354537515).

20005222327765 is a wasteful number, since it uses less digits than its factorization.

20005222327765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013052.

The product of its (nonzero) digits is 705600, while the sum is 43.

Adding to 20005222327765 its reverse (56772322250002), we get a palindrome (76777544577767).

The spelling of 20005222327765 in words is "twenty trillion, five billion, two hundred twenty-two million, three hundred twenty-seven thousand, seven hundred sixty-five".