47909931142 has 4 divisors (see below), whose sum is σ = 71864896716. Its totient is φ = 23954965570.

The previous prime is 47909931079. The next prime is 47909931149. The reversal of 47909931142 is 24113990974.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47909931149) 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 as a sum of consecutive naturals, namely, 11977482784 + ... + 11977482787.

It is an arithmetic number, because the mean of its divisors is an integer number (17966224179).

Almost surely, 2^47909931142 is an apocalyptic number.

47909931142 is a deficient number, since it is larger than the sum of its proper divisors (23954965574).

47909931142 is a wasteful number, since it uses less digits than its factorization.

47909931142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23954965573.

The product of its (nonzero) digits is 489888, while the sum is 49.

The spelling of 47909931142 in words is "forty-seven billion, nine hundred nine million, nine hundred thirty-one thousand, one hundred forty-two".