47131927018 has 48 divisors (see below), whose sum is σ = 80637657408. Its totient is φ = 20630332800.

The previous prime is 47131926977. The next prime is 47131927019. The reversal of 47131927018 is 81072913174.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (47131927019) 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 23 ways as a sum of consecutive naturals, for example, 706930 + ... + 770722.

It is an arithmetic number, because the mean of its divisors is an integer number (1679951196).

Almost surely, 2^47131927018 is an apocalyptic number.

47131927018 is a deficient number, since it is larger than the sum of its proper divisors (33505730390).

47131927018 is a wasteful number, since it uses less digits than its factorization.

47131927018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63931 (or 63920 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The spelling of 47131927018 in words is "forty-seven billion, one hundred thirty-one million, nine hundred twenty-seven thousand, eighteen".