51828077093 has 4 divisors (see below), whose sum is σ = 55814852268. Its totient is φ = 47841301920.

The previous prime is 51828077087. The next prime is 51828077141. The reversal of 51828077093 is 39077082815.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15162720769 + 36665356324 = 123137^2 + 191482^2 .

It is a cyclic number.

It is not a de Polignac number, because 51828077093 - 2⁸ = 51828076837 is a prime.

It is a super-2 number, since 2×51828077093² (a number of 22 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 (51828077003) 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, 1993387568 + ... + 1993387593.

It is an arithmetic number, because the mean of its divisors is an integer number (13953713067).

Almost surely, 2^51828077093 is an apocalyptic number.

It is an amenable number.

51828077093 is a deficient number, since it is larger than the sum of its proper divisors (3986775175).

51828077093 is a wasteful number, since it uses less digits than its factorization.

51828077093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986775174.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 51828077093 in words is "fifty-one billion, eight hundred twenty-eight million, seventy-seven thousand, ninety-three".