97933944986893 has 4 divisors (see below), whose sum is σ = 97954680529408. Its totient is φ = 97913209444380.

The previous prime is 97933944986887. The next prime is 97933944986989. The reversal of 97933944986893 is 39868944933979.

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 a de Polignac number, because none of the positive numbers 2^k-97933944986893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97933944986798 and 97933944986807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97933944986833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10367764173 + ... + 10367773618.

It is an arithmetic number, because the mean of its divisors is an integer number (24488670132352).

Almost surely, 2^{97933944986893} is an apocalyptic number.

It is an amenable number.

97933944986893 is a deficient number, since it is larger than the sum of its proper divisors (20735542515).

97933944986893 is a wasteful number, since it uses less digits than its factorization.

97933944986893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20735542514.

The product of its digits is 68568643584, while the sum is 91.

The spelling of 97933944986893 in words is "ninety-seven trillion, nine hundred thirty-three billion, nine hundred forty-four million, nine hundred eighty-six thousand, eight hundred ninety-three".