65355941521 has 32 divisors (see below), whose sum is σ = 72277399040. Its totient is φ = 58731319296.

The previous prime is 65355941507. The next prime is 65355941537. The reversal of 65355941521 is 12514955356.

It is not a de Polignac number, because 65355941521 - 2²³ = 65347552913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65355941501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30581965 + ... + 30584101.

It is an arithmetic number, because the mean of its divisors is an integer number (2258668720).

Almost surely, 2^65355941521 is an apocalyptic number.

It is an amenable number.

65355941521 is a deficient number, since it is larger than the sum of its proper divisors (6921457519).

65355941521 is a wasteful number, since it uses less digits than its factorization.

65355941521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633.

The product of its digits is 810000, while the sum is 46.

The spelling of 65355941521 in words is "sixty-five billion, three hundred fifty-five million, nine hundred forty-one thousand, five hundred twenty-one".