47031247547 has 4 divisors (see below), whose sum is σ = 47032395840. Its totient is φ = 47030099256.

The previous prime is 47031247519. The next prime is 47031247577. The reversal of 47031247547 is 74574213074.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74574213074 = 2 ⋅37287106537.

It is a cyclic number.

It is not a de Polignac number, because 47031247547 - 2¹⁸ = 47030985403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47031247498 and 47031247507.

It is not an unprimeable number, because it can be changed into a prime (47031247577) 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, 510347 + ... + 595412.

It is an arithmetic number, because the mean of its divisors is an integer number (11758098960).

Almost surely, 2^47031247547 is an apocalyptic number.

47031247547 is a deficient number, since it is larger than the sum of its proper divisors (1148293).

47031247547 is a wasteful number, since it uses less digits than its factorization.

47031247547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148292.

The product of its (nonzero) digits is 658560, while the sum is 44.

The spelling of 47031247547 in words is "forty-seven billion, thirty-one million, two hundred forty-seven thousand, five hundred forty-seven".