47509561087 has 4 divisors (see below), whose sum is σ = 47748302800. Its totient is φ = 47270819376.

The previous prime is 47509561061. The next prime is 47509561117. The reversal of 47509561087 is 78016590574.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47509561087 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 (47509561787) 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, 119370558 + ... + 119370955.

It is an arithmetic number, because the mean of its divisors is an integer number (11937075700).

Almost surely, 2^47509561087 is an apocalyptic number.

47509561087 is a deficient number, since it is larger than the sum of its proper divisors (238741713).

47509561087 is a wasteful number, since it uses less digits than its factorization.

47509561087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238741712.

The product of its (nonzero) digits is 2116800, while the sum is 52.

The spelling of 47509561087 in words is "forty-seven billion, five hundred nine million, five hundred sixty-one thousand, eighty-seven".