27609197723 has 4 divisors (see below), whose sum is σ = 28809597648. Its totient is φ = 26408797800.

The previous prime is 27609197717. The next prime is 27609197731. The reversal of 27609197723 is 32779190672.

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

It is not a de Polignac number, because 27609197723 - 2²⁴ = 27592420507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27609197753) 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, 600199928 + ... + 600199973.

It is an arithmetic number, because the mean of its divisors is an integer number (7202399412).

Almost surely, 2^27609197723 is an apocalyptic number.

27609197723 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

27609197723 is a deficient number, since it is larger than the sum of its proper divisors (1200399925).

27609197723 is a wasteful number, since it uses less digits than its factorization.

27609197723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200399924.

The product of its (nonzero) digits is 2000376, while the sum is 53.

The spelling of 27609197723 in words is "twenty-seven billion, six hundred nine million, one hundred ninety-seven thousand, seven hundred twenty-three".