49521326399 has 4 divisors (see below), whose sum is σ = 50859740664. Its totient is φ = 48182912136.

The previous prime is 49521326363. The next prime is 49521326401. The reversal of 49521326399 is 99362312594.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49521326399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49521326399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49521326359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669207077 + ... + 669207150.

It is an arithmetic number, because the mean of its divisors is an integer number (12714935166).

Almost surely, 2^49521326399 is an apocalyptic number.

49521326399 is a deficient number, since it is larger than the sum of its proper divisors (1338414265).

49521326399 is a wasteful number, since it uses less digits than its factorization.

49521326399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338414264.

The product of its digits is 3149280, while the sum is 53.

The spelling of 49521326399 in words is "forty-nine billion, five hundred twenty-one million, three hundred twenty-six thousand, three hundred ninety-nine".