27723970193 has 4 divisors (see below), whose sum is σ = 27746492928. Its totient is φ = 27701447460.

The previous prime is 27723970103. The next prime is 27723970231. The reversal of 27723970193 is 39107932772.

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 27723970193 - 2²⁰ = 27722921617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27723970103) 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, 11259521 + ... + 11261982.

It is an arithmetic number, because the mean of its divisors is an integer number (6936623232).

Almost surely, 2^27723970193 is an apocalyptic number.

It is an amenable number.

27723970193 is a deficient number, since it is larger than the sum of its proper divisors (22522735).

27723970193 is a wasteful number, since it uses less digits than its factorization.

27723970193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22522734.

The product of its (nonzero) digits is 1000188, while the sum is 50.

The spelling of 27723970193 in words is "twenty-seven billion, seven hundred twenty-three million, nine hundred seventy thousand, one hundred ninety-three".