78275435093 has 4 divisors (see below), whose sum is σ = 78276102828. Its totient is φ = 78274767360.

The previous prime is 78275435011. The next prime is 78275435099. The reversal of 78275435093 is 39053457287.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39053457287 = 13 ⋅3004112099.

It can be written as a sum of positive squares in 2 ways, for example, as 75194963089 + 3080472004 = 274217^2 + 55502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78275435093 is a prime.

It is a super-2 number, since 2×78275435093² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78275435099) 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 3 ways as a sum of consecutive naturals, for example, 106346 + ... + 409707.

It is an arithmetic number, because the mean of its divisors is an integer number (19569025707).

Almost surely, 2^78275435093 is an apocalyptic number.

It is an amenable number.

78275435093 is a deficient number, since it is larger than the sum of its proper divisors (667735).

78275435093 is a wasteful number, since it uses less digits than its factorization.

78275435093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667734.

The product of its (nonzero) digits is 6350400, while the sum is 53.

The spelling of 78275435093 in words is "seventy-eight billion, two hundred seventy-five million, four hundred thirty-five thousand, ninety-three".