47515548187 has 4 divisors (see below), whose sum is σ = 47526199200. Its totient is φ = 47504897176.

The previous prime is 47515548173. The next prime is 47515548211. The reversal of 47515548187 is 78184551574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78184551574 = 2 ⋅39092275787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47515548187 is a prime.

It is a super-2 number, since 2×47515548187² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47515548167) 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, 5318812 + ... + 5327737.

It is an arithmetic number, because the mean of its divisors is an integer number (11881549800).

Almost surely, 2^47515548187 is an apocalyptic number.

47515548187 is a deficient number, since it is larger than the sum of its proper divisors (10651013).

47515548187 is a wasteful number, since it uses less digits than its factorization.

47515548187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10651012.

The product of its digits is 6272000, while the sum is 55.

The spelling of 47515548187 in words is "forty-seven billion, five hundred fifteen million, five hundred forty-eight thousand, one hundred eighty-seven".