50391843649 has 48 divisors (see below), whose sum is σ = 63701959680. Its totient is φ = 38993310720.

The previous prime is 50391843613. The next prime is 50391843653. The reversal of 50391843649 is 94634819305.

It is a happy number.

50391843649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 50391843649 - 2¹³ = 50391835457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50391843596 and 50391843605.

It is not an unprimeable number, because it can be changed into a prime (50391843949) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9207984 + ... + 9213454.

It is an arithmetic number, because the mean of its divisors is an integer number (1327124160).

Almost surely, 2^50391843649 is an apocalyptic number.

It is an amenable number.

50391843649 is a deficient number, since it is larger than the sum of its proper divisors (13310116031).

50391843649 is a wasteful number, since it uses less digits than its factorization.

50391843649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698 (or 5681 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 50391843649 in words is "fifty billion, three hundred ninety-one million, eight hundred forty-three thousand, six hundred forty-nine".