49681434971 has 4 divisors (see below), whose sum is σ = 56778782832. Its totient is φ = 42584087112.

The previous prime is 49681434961. The next prime is 49681435031. The reversal of 49681434971 is 17943418694.

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

It is a de Polignac number, because none of the positive numbers 2^k-49681434971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49681434911) 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, 3548673920 + ... + 3548673933.

It is an arithmetic number, because the mean of its divisors is an integer number (14194695708).

Almost surely, 2^49681434971 is an apocalyptic number.

49681434971 is a deficient number, since it is larger than the sum of its proper divisors (7097347861).

49681434971 is an equidigital number, since it uses as much as digits as its factorization.

49681434971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7097347860.

The product of its digits is 5225472, while the sum is 56.

The spelling of 49681434971 in words is "forty-nine billion, six hundred eighty-one million, four hundred thirty-four thousand, nine hundred seventy-one".