93965442821 has 4 divisors (see below), whose sum is σ = 94038912000. Its totient is φ = 93891973644.

The previous prime is 93965442817. The next prime is 93965442839. The reversal of 93965442821 is 12824456939.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 93965442821 - 2² = 93965442817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93965442121) 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 3 ways as a sum of consecutive naturals, for example, 36732671 + ... + 36735228.

It is an arithmetic number, because the mean of its divisors is an integer number (23509728000).

Almost surely, 2^93965442821 is an apocalyptic number.

It is an amenable number.

93965442821 is a deficient number, since it is larger than the sum of its proper divisors (73469179).

93965442821 is a wasteful number, since it uses less digits than its factorization.

93965442821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73469178.

The product of its digits is 3732480, while the sum is 53.

The spelling of 93965442821 in words is "ninety-three billion, nine hundred sixty-five million, four hundred forty-two thousand, eight hundred twenty-one".