48171786815 has 4 divisors (see below), whose sum is σ = 57806144184. Its totient is φ = 38537429448.

The previous prime is 48171786797. The next prime is 48171786821. The reversal of 48171786815 is 51868717184.

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 48171786815 - 2²⁴ = 48155009599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4817178677 + ... + 4817178686.

It is an arithmetic number, because the mean of its divisors is an integer number (14451536046).

Almost surely, 2^48171786815 is an apocalyptic number.

48171786815 is a deficient number, since it is larger than the sum of its proper divisors (9634357369).

48171786815 is an equidigital number, since it uses as much as digits as its factorization.

48171786815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9634357368.

The product of its digits is 3010560, while the sum is 56.

The spelling of 48171786815 in words is "forty-eight billion, one hundred seventy-one million, seven hundred eighty-six thousand, eight hundred fifteen".