47981563637 has 8 divisors (see below), whose sum is σ = 54838320576. Its totient is φ = 41125368672.

The previous prime is 47981563621. The next prime is 47981563661. The reversal of 47981563637 is 73636518974.

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

It is a cyclic number.

It is not a de Polignac number, because 47981563637 - 2⁴ = 47981563621 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 (47981563697) 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, 61913 + ... + 315905.

It is an arithmetic number, because the mean of its divisors is an integer number (6854790072).

Almost surely, 2^47981563637 is an apocalyptic number.

It is an amenable number.

47981563637 is a deficient number, since it is larger than the sum of its proper divisors (6856756939).

47981563637 is a wasteful number, since it uses less digits than its factorization.

47981563637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280987.

The product of its digits is 22861440, while the sum is 59.

The spelling of 47981563637 in words is "forty-seven billion, nine hundred eighty-one million, five hundred sixty-three thousand, six hundred thirty-seven".