47990981171 has 16 divisors (see below), whose sum is σ = 56015160000. Its totient is φ = 41099111424.

The previous prime is 47990981161. The next prime is 47990981191. The reversal of 47990981171 is 17118909974.

It is not a de Polignac number, because 47990981171 - 2¹⁴ = 47990964787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47990981141) 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 15 ways as a sum of consecutive naturals, for example, 334805 + ... + 456153.

It is an arithmetic number, because the mean of its divisors is an integer number (3500947500).

Almost surely, 2^47990981171 is an apocalyptic number.

47990981171 is a deficient number, since it is larger than the sum of its proper divisors (8024178829).

47990981171 is a wasteful number, since it uses less digits than its factorization.

47990981171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122523 (or 122509 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 56.

The spelling of 47990981171 in words is "forty-seven billion, nine hundred ninety million, nine hundred eighty-one thousand, one hundred seventy-one".