49471405665 has 16 divisors (see below), whose sum is σ = 86350090176. Its totient is φ = 23986136000.

The previous prime is 49471405661. The next prime is 49471405673. The reversal of 49471405665 is 56650417494.

It is a happy number.

It is not a de Polignac number, because 49471405665 - 2² = 49471405661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49471405661) 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 15 ways as a sum of consecutive naturals, for example, 149913186 + ... + 149913515.

It is an arithmetic number, because the mean of its divisors is an integer number (5396880636).

Almost surely, 2^49471405665 is an apocalyptic number.

It is an amenable number.

49471405665 is a deficient number, since it is larger than the sum of its proper divisors (36878684511).

49471405665 is a wasteful number, since it uses less digits than its factorization.

49471405665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299826720.

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 49471405665 in words is "forty-nine billion, four hundred seventy-one million, four hundred five thousand, six hundred sixty-five".