47555821755247 has 4 divisors (see below), whose sum is σ = 51213961890280. Its totient is φ = 43897681620216.

The previous prime is 47555821755179. The next prime is 47555821755259. The reversal of 47555821755247 is 74255712855574.

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-47555821755247 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 (47555821755287) 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, 1829070067497 + ... + 1829070067522.

It is an arithmetic number, because the mean of its divisors is an integer number (12803490472570).

Almost surely, 2^{47555821755247} is an apocalyptic number.

47555821755247 is a deficient number, since it is larger than the sum of its proper divisors (3658140135033).

47555821755247 is a wasteful number, since it uses less digits than its factorization.

47555821755247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658140135032.

The product of its digits is 548800000, while the sum is 67.

The spelling of 47555821755247 in words is "forty-seven trillion, five hundred fifty-five billion, eight hundred twenty-one million, seven hundred fifty-five thousand, two hundred forty-seven".