50561816349 has 32 divisors (see below), whose sum is σ = 75559192704. Its totient is φ = 29804647680.

The previous prime is 50561816309. The next prime is 50561816359. The reversal of 50561816349 is 94361816505.

It is not a de Polignac number, because 50561816349 - 2²⁴ = 50545039133 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 50561816298 and 50561816307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50561816309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4552447 + ... + 4563539.

It is an arithmetic number, because the mean of its divisors is an integer number (2361224772).

Almost surely, 2^50561816349 is an apocalyptic number.

It is an amenable number.

50561816349 is a deficient number, since it is larger than the sum of its proper divisors (24997376355).

50561816349 is a wasteful number, since it uses less digits than its factorization.

50561816349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14877.

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 50561816349 in words is "fifty billion, five hundred sixty-one million, eight hundred sixteen thousand, three hundred forty-nine".