50850890645 has 4 divisors (see below), whose sum is σ = 61021068780. Its totient is φ = 40680712512.

The previous prime is 50850890633. The next prime is 50850890653. The reversal of 50850890645 is 54609805805.

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 19365227281 + 31485663364 = 139159^2 + 177442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50850890645 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50850890593 and 50850890602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5085089060 + ... + 5085089069.

It is an arithmetic number, because the mean of its divisors is an integer number (15255267195).

Almost surely, 2^50850890645 is an apocalyptic number.

It is an amenable number.

50850890645 is a deficient number, since it is larger than the sum of its proper divisors (10170178135).

50850890645 is a wasteful number, since it uses less digits than its factorization.

50850890645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10170178134.

The product of its (nonzero) digits is 1728000, while the sum is 50.

The spelling of 50850890645 in words is "fifty billion, eight hundred fifty million, eight hundred ninety thousand, six hundred forty-five".