12170554527 has 4 divisors (see below), whose sum is σ = 16227406040. Its totient is φ = 8113703016.

The previous prime is 12170554471. The next prime is 12170554537. The reversal of 12170554527 is 72545507121.

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

It is not a de Polignac number, because 12170554527 - 2⁶ = 12170554463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12170554537) 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, 2028425752 + ... + 2028425757.

It is an arithmetic number, because the mean of its divisors is an integer number (4056851510).

Almost surely, 2^12170554527 is an apocalyptic number.

12170554527 is a deficient number, since it is larger than the sum of its proper divisors (4056851513).

12170554527 is an equidigital number, since it uses as much as digits as its factorization.

12170554527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056851512.

The product of its (nonzero) digits is 98000, while the sum is 39.

The spelling of 12170554527 in words is "twelve billion, one hundred seventy million, five hundred fifty-four thousand, five hundred twenty-seven".