47878826389 has 4 divisors (see below), whose sum is σ = 50398764640. Its totient is φ = 45358888140.

The previous prime is 47878826327. The next prime is 47878826419. The reversal of 47878826389 is 98362887874.

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 47878826389 - 2¹¹ = 47878824341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47878826089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1259969097 + ... + 1259969134.

It is an arithmetic number, because the mean of its divisors is an integer number (12599691160).

Almost surely, 2^47878826389 is an apocalyptic number.

It is an amenable number.

47878826389 is a deficient number, since it is larger than the sum of its proper divisors (2519938251).

47878826389 is a wasteful number, since it uses less digits than its factorization.

47878826389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519938250.

The product of its digits is 260112384, while the sum is 70.

The spelling of 47878826389 in words is "forty-seven billion, eight hundred seventy-eight million, eight hundred twenty-six thousand, three hundred eighty-nine".