50813951449 has 4 divisors (see below), whose sum is σ = 50817462436. Its totient is φ = 50810440464.

The previous prime is 50813951431. The next prime is 50813951459. The reversal of 50813951449 is 94415931805.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31101791449 + 19712160000 = 176357^2 + 140400^2 .

It is a cyclic number.

It is not a de Polignac number, because 50813951449 - 2¹¹ = 50813949401 is a prime.

It is a super-2 number, since 2×50813951449² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50813951459) 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, 1733694 + ... + 1762759.

It is an arithmetic number, because the mean of its divisors is an integer number (12704365609).

Almost surely, 2^50813951449 is an apocalyptic number.

It is an amenable number.

50813951449 is a deficient number, since it is larger than the sum of its proper divisors (3510987).

50813951449 is a wasteful number, since it uses less digits than its factorization.

50813951449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510986.

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 50813951449 in words is "fifty billion, eight hundred thirteen million, nine hundred fifty-one thousand, four hundred forty-nine".