49242772289 has 4 divisors (see below), whose sum is σ = 49269093120. Its totient is φ = 49216451460.

The previous prime is 49242772259. The next prime is 49242772333. The reversal of 49242772289 is 98227724294.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49242772289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49242772259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13157609 + ... + 13161350.

It is an arithmetic number, because the mean of its divisors is an integer number (12317273280).

Almost surely, 2^49242772289 is an apocalyptic number.

It is an amenable number.

49242772289 is a deficient number, since it is larger than the sum of its proper divisors (26320831).

49242772289 is a wasteful number, since it uses less digits than its factorization.

49242772289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26320830.

The product of its digits is 8128512, while the sum is 56.

The spelling of 49242772289 in words is "forty-nine billion, two hundred forty-two million, seven hundred seventy-two thousand, two hundred eighty-nine".