47816881431 has 8 divisors (see below), whose sum is σ = 69551827584. Its totient is φ = 28979928120.

The previous prime is 47816881423. The next prime is 47816881451. The reversal of 47816881431 is 13418861874.

47816881431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47816881431 - 2³ = 47816881423 is a prime.

It is a super-2 number, since 2×47816881431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47816881421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724498171 + ... + 724498236.

It is an arithmetic number, because the mean of its divisors is an integer number (8693978448).

Almost surely, 2^47816881431 is an apocalyptic number.

47816881431 is a deficient number, since it is larger than the sum of its proper divisors (21734946153).

47816881431 is a wasteful number, since it uses less digits than its factorization.

47816881431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448996421.

The product of its digits is 1032192, while the sum is 51.

The spelling of 47816881431 in words is "forty-seven billion, eight hundred sixteen million, eight hundred eighty-one thousand, four hundred thirty-one".