93945899521 has 8 divisors (see below), whose sum is σ = 99001105344. Its totient is φ = 88971577200.

The previous prime is 93945899507. The next prime is 93945899543. The reversal of 93945899521 is 12599854939.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 93945899521 - 2⁹ = 93945899009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93945899581) 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 7 ways as a sum of consecutive naturals, for example, 20218491 + ... + 20223136.

It is an arithmetic number, because the mean of its divisors is an integer number (12375138168).

Almost surely, 2^93945899521 is an apocalyptic number.

It is an amenable number.

93945899521 is a deficient number, since it is larger than the sum of its proper divisors (5055205823).

93945899521 is a wasteful number, since it uses less digits than its factorization.

93945899521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40441751.

The product of its digits is 31492800, while the sum is 64.

The spelling of 93945899521 in words is "ninety-three billion, nine hundred forty-five million, eight hundred ninety-nine thousand, five hundred twenty-one".