49878138247 has 8 divisors (see below), whose sum is σ = 57011029376. Its totient is φ = 42747107832.

The previous prime is 49878138241. The next prime is 49878138251. The reversal of 49878138247 is 74283187894.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49878138247 - 2³ = 49878138239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49878138241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407253 + ... + 515374.

It is an arithmetic number, because the mean of its divisors is an integer number (7126378672).

Almost surely, 2^49878138247 is an apocalyptic number.

49878138247 is a deficient number, since it is larger than the sum of its proper divisors (7132891129).

49878138247 is an equidigital number, since it uses as much as digits as its factorization.

49878138247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930357.

The product of its digits is 21676032, while the sum is 61.

The spelling of 49878138247 in words is "forty-nine billion, eight hundred seventy-eight million, one hundred thirty-eight thousand, two hundred forty-seven".