47781825853 has 4 divisors (see below), whose sum is σ = 47804989248. Its totient is φ = 47758662460.

The previous prime is 47781825827. The next prime is 47781825899. The reversal of 47781825853 is 35852818774.

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 a de Polignac number, because none of the positive numbers 2^k-47781825853 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 (47781825653) 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, 11578603 + ... + 11582728.

It is an arithmetic number, because the mean of its divisors is an integer number (11951247312).

Almost surely, 2^47781825853 is an apocalyptic number.

It is an amenable number.

47781825853 is a deficient number, since it is larger than the sum of its proper divisors (23163395).

47781825853 is a wasteful number, since it uses less digits than its factorization.

47781825853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23163394.

The product of its digits is 15052800, while the sum is 58.

The spelling of 47781825853 in words is "forty-seven billion, seven hundred eighty-one million, eight hundred twenty-five thousand, eight hundred fifty-three".