49518265729 has 3 divisors (see below), whose sum is σ = 49518488257. Its totient is φ = 49518043202.

The previous prime is 49518265723. The next prime is 49518265751. The reversal of 49518265729 is 92756281594.

It is a happy number.

The square root of 49518265729 is 222527.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 49518265729 - 2⁵ = 49518265697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49518265723) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 111264 + ... + 333790.

Almost surely, 2^49518265729 is an apocalyptic number.

49518265729 is the 222527-th square number.

49518265729 is the 111264-th centered octagonal number.

It is an amenable number.

49518265729 is a deficient number, since it is larger than the sum of its proper divisors (222528).

49518265729 is an frugal number, since it uses more digits than its factorization.

49518265729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445054 (or 222527 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 58.

The spelling of 49518265729 in words is "forty-nine billion, five hundred eighteen million, two hundred sixty-five thousand, seven hundred twenty-nine".