49387281717 has 4 divisors (see below), whose sum is σ = 65849708960. Its totient is φ = 32924854476.

The previous prime is 49387281703. The next prime is 49387281721. The reversal of 49387281717 is 71718278394.

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 not a de Polignac number, because 49387281717 - 2⁴ = 49387281701 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 (49387281787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8231213617 + ... + 8231213622.

It is an arithmetic number, because the mean of its divisors is an integer number (16462427240).

Almost surely, 2^49387281717 is an apocalyptic number.

It is an amenable number.

49387281717 is a deficient number, since it is larger than the sum of its proper divisors (16462427243).

49387281717 is a wasteful number, since it uses less digits than its factorization.

49387281717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16462427242.

The product of its digits is 4741632, while the sum is 57.

The spelling of 49387281717 in words is "forty-nine billion, three hundred eighty-seven million, two hundred eighty-one thousand, seven hundred seventeen".