50561442433 has 6 divisors (see below), whose sum is σ = 51824728262. Its totient is φ = 49328234880.

The previous prime is 50561442419. The next prime is 50561442487. The reversal of 50561442433 is 33424416505.

It can be written as a sum of positive squares in 3 ways, for example, as 4247389584 + 46314052849 = 65172^2 + 215207^2 .

It is not a de Polignac number, because 50561442433 - 2²¹ = 50559345281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50561442392 and 50561442401.

It is not an unprimeable number, because it can be changed into a prime (50561422433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15037416 + ... + 15040777.

Almost surely, 2^50561442433 is an apocalyptic number.

It is an amenable number.

50561442433 is a deficient number, since it is larger than the sum of its proper divisors (1263285829).

50561442433 is an equidigital number, since it uses as much as digits as its factorization.

50561442433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30078275 (or 30078234 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 50561442433 its reverse (33424416505), we get a palindrome (83985858938).

The spelling of 50561442433 in words is "fifty billion, five hundred sixty-one million, four hundred forty-two thousand, four hundred thirty-three".