47872517109 has 4 divisors (see below), whose sum is σ = 63830022816. Its totient is φ = 31915011404.

The previous prime is 47872517083. The next prime is 47872517113. The reversal of 47872517109 is 90171527874.

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 47872517109 - 2¹³ = 47872508917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47872517149) 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, 7978752849 + ... + 7978752854.

It is an arithmetic number, because the mean of its divisors is an integer number (15957505704).

Almost surely, 2^47872517109 is an apocalyptic number.

It is an amenable number.

47872517109 is a deficient number, since it is larger than the sum of its proper divisors (15957505707).

47872517109 is a wasteful number, since it uses less digits than its factorization.

47872517109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15957505706.

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 47872517109 in words is "forty-seven billion, eight hundred seventy-two million, five hundred seventeen thousand, one hundred nine".