50390354387 has 4 divisors (see below), whose sum is σ = 50391354960. Its totient is φ = 50389353816.

The previous prime is 50390354341. The next prime is 50390354407. The reversal of 50390354387 is 78345309305.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50390354387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50390354327) 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, 420503 + ... + 526880.

It is an arithmetic number, because the mean of its divisors is an integer number (12597838740).

Almost surely, 2^50390354387 is an apocalyptic number.

50390354387 is a deficient number, since it is larger than the sum of its proper divisors (1000573).

50390354387 is an equidigital number, since it uses as much as digits as its factorization.

50390354387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000572.

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 50390354387 in words is "fifty billion, three hundred ninety million, three hundred fifty-four thousand, three hundred eighty-seven".