49664189899 has 4 divisors (see below), whose sum is σ = 49664665264. Its totient is φ = 49663714536.

The previous prime is 49664189893. The next prime is 49664189977. The reversal of 49664189899 is 99898146694.

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 a cyclic number.

It is not a de Polignac number, because 49664189899 - 2¹¹ = 49664187851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49664189893) 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 3 ways as a sum of consecutive naturals, for example, 5112 + ... + 315205.

It is an arithmetic number, because the mean of its divisors is an integer number (12416166316).

Almost surely, 2^49664189899 is an apocalyptic number.

49664189899 is a deficient number, since it is larger than the sum of its proper divisors (475365).

49664189899 is a wasteful number, since it uses less digits than its factorization.

49664189899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475364.

The product of its digits is 241864704, while the sum is 73.

The spelling of 49664189899 in words is "forty-nine billion, six hundred sixty-four million, one hundred eighty-nine thousand, eight hundred ninety-nine".