172045648927 has 4 divisors (see below), whose sum is σ = 173653552296. Its totient is φ = 170437745560.

The previous prime is 172045648897. The next prime is 172045648937. The reversal of 172045648927 is 729846540271.

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

It is a cyclic number.

It is not a de Polignac number, because 172045648927 - 2⁷ = 172045648799 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 (172045648937) 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, 803951524 + ... + 803951737.

It is an arithmetic number, because the mean of its divisors is an integer number (43413388074).

Almost surely, 2^172045648927 is an apocalyptic number.

172045648927 is a deficient number, since it is larger than the sum of its proper divisors (1607903369).

172045648927 is a wasteful number, since it uses less digits than its factorization.

172045648927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607903368.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 172045648927 in words is "one hundred seventy-two billion, forty-five million, six hundred forty-eight thousand, nine hundred twenty-seven".