50158798187 has 4 divisors (see below), whose sum is σ = 50478281136. Its totient is φ = 49839315240.

The previous prime is 50158798147. The next prime is 50158798201. The reversal of 50158798187 is 78189785105.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50158798187 - 2³² = 45863830891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50158798147) 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, 159741239 + ... + 159741552.

It is an arithmetic number, because the mean of its divisors is an integer number (12619570284).

Almost surely, 2^50158798187 is an apocalyptic number.

50158798187 is a deficient number, since it is larger than the sum of its proper divisors (319482949).

50158798187 is a wasteful number, since it uses less digits than its factorization.

50158798187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319482948.

The product of its (nonzero) digits is 5644800, while the sum is 59.

The spelling of 50158798187 in words is "fifty billion, one hundred fifty-eight million, seven hundred ninety-eight thousand, one hundred eighty-seven".