8121773093 has 4 divisors (see below), whose sum is σ = 9282026400. Its totient is φ = 6961519788.

The previous prime is 8121773057. The next prime is 8121773113. The reversal of 8121773093 is 3903771218.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3903771218 = 2 ⋅1951885609.

It is a cyclic number.

It is not a de Polignac number, because 8121773093 - 2¹⁰ = 8121772069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8121773093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121776093) 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, 580126643 + ... + 580126656.

It is an arithmetic number, because the mean of its divisors is an integer number (2320506600).

Almost surely, 2^8121773093 is an apocalyptic number.

It is an amenable number.

8121773093 is a deficient number, since it is larger than the sum of its proper divisors (1160253307).

8121773093 is a wasteful number, since it uses less digits than its factorization.

8121773093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160253306.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 8121773093 is about 90120.8804495384. The cubic root of 8121773093 is about 2010.0967002973.

The spelling of 8121773093 in words is "eight billion, one hundred twenty-one million, seven hundred seventy-three thousand, ninety-three".