65722221711 has 12 divisors (see below), whose sum is σ = 96232538688. Its totient is φ = 43214611104.

The previous prime is 65722221701. The next prime is 65722221727. The reversal of 65722221711 is 11712222756.

It is not a de Polignac number, because 65722221711 - 2¹¹ = 65722219663 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65722221701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50016255 + ... + 50017568.

It is an arithmetic number, because the mean of its divisors is an integer number (8019378224).

Almost surely, 2^65722221711 is an apocalyptic number.

65722221711 is a deficient number, since it is larger than the sum of its proper divisors (30510316977).

65722221711 is a wasteful number, since it uses less digits than its factorization.

65722221711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100033902 (or 100033899 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The spelling of 65722221711 in words is "sixty-five billion, seven hundred twenty-two million, two hundred twenty-one thousand, seven hundred eleven".