47446661687 has 4 divisors (see below), whose sum is σ = 47447662080. Its totient is φ = 47445661296.

The previous prime is 47446661681. The next prime is 47446661723. The reversal of 47446661687 is 78616664474.

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

It is a cyclic number.

It is not a de Polignac number, because 47446661687 - 2¹⁶ = 47446596151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47446661681) 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, 425318 + ... + 525155.

It is an arithmetic number, because the mean of its divisors is an integer number (11861915520).

Almost surely, 2^47446661687 is an apocalyptic number.

47446661687 is a deficient number, since it is larger than the sum of its proper divisors (1000393).

47446661687 is an equidigital number, since it uses as much as digits as its factorization.

47446661687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000392.

The product of its digits is 32514048, while the sum is 59.

The spelling of 47446661687 in words is "forty-seven billion, four hundred forty-six million, six hundred sixty-one thousand, six hundred eighty-seven".