49782281117 has 4 divisors (see below), whose sum is σ = 49798296540. Its totient is φ = 49766265696.

The previous prime is 49782281113. The next prime is 49782281191. The reversal of 49782281117 is 71118228794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71118228794 = 2 ⋅35559114397.

It can be written as a sum of positive squares in 2 ways, for example, as 29236212196 + 20546068921 = 170986^2 + 143339^2 .

It is a cyclic number.

It is not a de Polignac number, because 49782281117 - 2² = 49782281113 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49782281113) 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, 8003048 + ... + 8009265.

It is an arithmetic number, because the mean of its divisors is an integer number (12449574135).

Almost surely, 2^49782281117 is an apocalyptic number.

It is an amenable number.

49782281117 is a deficient number, since it is larger than the sum of its proper divisors (16015423).

49782281117 is a wasteful number, since it uses less digits than its factorization.

49782281117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16015422.

The product of its digits is 451584, while the sum is 50.

The spelling of 49782281117 in words is "forty-nine billion, seven hundred eighty-two million, two hundred eighty-one thousand, one hundred seventeen".