53198979693 has 4 divisors (see below), whose sum is σ = 70931972928. Its totient is φ = 35465986460.

The previous prime is 53198979667. The next prime is 53198979721. The reversal of 53198979693 is 39697989135.

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 53198979693 - 2⁵ = 53198979661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53198979793) 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, 8866496613 + ... + 8866496618.

It is an arithmetic number, because the mean of its divisors is an integer number (17732993232).

Almost surely, 2^53198979693 is an apocalyptic number.

It is an amenable number.

53198979693 is a deficient number, since it is larger than the sum of its proper divisors (17732993235).

53198979693 is a wasteful number, since it uses less digits than its factorization.

53198979693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17732993234.

The product of its digits is 99202320, while the sum is 69.

The spelling of 53198979693 in words is "fifty-three billion, one hundred ninety-eight million, nine hundred seventy-nine thousand, six hundred ninety-three".