50013998387 has 8 divisors (see below), whose sum is σ = 52201653504. Its totient is φ = 47827437768.

The previous prime is 50013998369. The next prime is 50013998417. The reversal of 50013998387 is 78389931005.

It is a happy number.

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

It is not a de Polignac number, because 50013998387 - 2⁶ = 50013998323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50013998347) 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, 179543 + ... + 363680.

It is an arithmetic number, because the mean of its divisors is an integer number (6525206688).

Almost surely, 2^50013998387 is an apocalyptic number.

50013998387 is a deficient number, since it is larger than the sum of its proper divisors (2187655117).

50013998387 is a wasteful number, since it uses less digits than its factorization.

50013998387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547249.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 50013998387 in words is "fifty billion, thirteen million, nine hundred ninety-eight thousand, three hundred eighty-seven".