65730221375 has 64 divisors (see below), whose sum is σ = 101857077504. Its totient is φ = 41236070400.

The previous prime is 65730221363. The next prime is 65730221377. The reversal of 65730221375 is 57312203756.

It is not a de Polignac number, because 65730221375 - 2⁸ = 65730221119 is a prime.

It is a super-3 number, since 3×65730221375³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65730221377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1259807 + ... + 1310943.

It is an arithmetic number, because the mean of its divisors is an integer number (1591516836).

Almost surely, 2^65730221375 is an apocalyptic number.

65730221375 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65730221375 is a deficient number, since it is larger than the sum of its proper divisors (36126856129).

65730221375 is a wasteful number, since it uses less digits than its factorization.

65730221375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51285 (or 51275 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 41.

The spelling of 65730221375 in words is "sixty-five billion, seven hundred thirty million, two hundred twenty-one thousand, three hundred seventy-five".