47431237637 has 4 divisors (see below), whose sum is σ = 54207128736. Its totient is φ = 40655346540.

The previous prime is 47431237631. The next prime is 47431237661. The reversal of 47431237637 is 73673213474.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47431237637 - 2²² = 47427043333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47431237591 and 47431237600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47431237631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3387945539 + ... + 3387945552.

It is an arithmetic number, because the mean of its divisors is an integer number (13551782184).

Almost surely, 2^47431237637 is an apocalyptic number.

It is an amenable number.

47431237637 is a deficient number, since it is larger than the sum of its proper divisors (6775891099).

47431237637 is an equidigital number, since it uses as much as digits as its factorization.

47431237637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6775891098.

The product of its digits is 1778112, while the sum is 47.

The spelling of 47431237637 in words is "forty-seven billion, four hundred thirty-one million, two hundred thirty-seven thousand, six hundred thirty-seven".