49318742065 has 4 divisors (see below), whose sum is σ = 59182490484. Its totient is φ = 39454993648.

The previous prime is 49318742047. The next prime is 49318742069. The reversal of 49318742065 is 56024781394.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9257518656 + 40061223409 = 96216^2 + 200153^2 .

It is a cyclic number.

It is not a de Polignac number, because 49318742065 - 2⁷ = 49318741937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49318742069) 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, 4931874202 + ... + 4931874211.

It is an arithmetic number, because the mean of its divisors is an integer number (14795622621).

It is a 1-persistent number, because it is pandigital, but 2⋅49318742065 = 98637484130 is not.

Almost surely, 2^49318742065 is an apocalyptic number.

It is an amenable number.

49318742065 is a deficient number, since it is larger than the sum of its proper divisors (9863748419).

49318742065 is an equidigital number, since it uses as much as digits as its factorization.

49318742065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9863748418.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 49318742065 in words is "forty-nine billion, three hundred eighteen million, seven hundred forty-two thousand, sixty-five".