47673912521 has 4 divisors (see below), whose sum is σ = 47710501632. Its totient is φ = 47637323412.

The previous prime is 47673912509. The next prime is 47673912541. The reversal of 47673912521 is 12521937674.

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 a de Polignac number, because none of the positive numbers 2^k-47673912521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47673912541) 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 in 3 ways as a sum of consecutive naturals, for example, 18292601 + ... + 18295206.

It is an arithmetic number, because the mean of its divisors is an integer number (11927625408).

Almost surely, 2^47673912521 is an apocalyptic number.

It is an amenable number.

47673912521 is a deficient number, since it is larger than the sum of its proper divisors (36589111).

47673912521 is a wasteful number, since it uses less digits than its factorization.

47673912521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36589110.

The product of its digits is 635040, while the sum is 47.

The spelling of 47673912521 in words is "forty-seven billion, six hundred seventy-three million, nine hundred twelve thousand, five hundred twenty-one".