49332407881 has 3 divisors (see below), whose sum is σ = 49332629991. Its totient is φ = 49332185772.

The previous prime is 49332407869. The next prime is 49332407903. The reversal of 49332407881 is 18870423394.

It is a happy number.

The square root of 49332407881 is 222109.

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 can be written as a sum of positive squares in only one way, i.e., 35460279481 + 13872128400 = 188309^2 + 117780^2 .

It is not a de Polignac number, because 49332407881 - 2¹¹ = 49332405833 is a prime.

It is a super-2 number, since 2×49332407881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49332407281) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 111055 + ... + 333163.

It is an arithmetic number, because the mean of its divisors is an integer number (16444209997).

Almost surely, 2^49332407881 is an apocalyptic number.

49332407881 is the 222109-th square number.

49332407881 is the 111055-th centered octagonal number.

It is an amenable number.

49332407881 is a deficient number, since it is larger than the sum of its proper divisors (222110).

49332407881 is an frugal number, since it uses more digits than its factorization.

49332407881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444218 (or 222109 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

Multiplying 49332407881 by its sum of digits (49), we get a square (2417287986169 = 1554763²).

The spelling of 49332407881 in words is "forty-nine billion, three hundred thirty-two million, four hundred seven thousand, eight hundred eighty-one".