65374629221 has 32 divisors (see below), whose sum is σ = 75470054400. Its totient is φ = 56005344000.

The previous prime is 65374629197. The next prime is 65374629241. The reversal of 65374629221 is 12292647356.

It is a cyclic number.

It is not a de Polignac number, because 65374629221 - 2¹⁸ = 65374367077 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65374629241) 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 31 ways as a sum of consecutive naturals, for example, 48033581 + ... + 48034941.

It is an arithmetic number, because the mean of its divisors is an integer number (2358439200).

Almost surely, 2^65374629221 is an apocalyptic number.

It is an amenable number.

65374629221 is a deficient number, since it is larger than the sum of its proper divisors (10095425179).

65374629221 is a wasteful number, since it uses less digits than its factorization.

65374629221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441.

The product of its digits is 1088640, while the sum is 47.

The spelling of 65374629221 in words is "sixty-five billion, three hundred seventy-four million, six hundred twenty-nine thousand, two hundred twenty-one".