50643662253 has 4 divisors (see below), whose sum is σ = 67524883008. Its totient is φ = 33762441500.

The previous prime is 50643662239. The next prime is 50643662287. The reversal of 50643662253 is 35226634605.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50643662253 - 2⁵ = 50643662221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50643662203) 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, 8440610373 + ... + 8440610378.

It is an arithmetic number, because the mean of its divisors is an integer number (16881220752).

Almost surely, 2^50643662253 is an apocalyptic number.

It is an amenable number.

50643662253 is a deficient number, since it is larger than the sum of its proper divisors (16881220755).

50643662253 is a wasteful number, since it uses less digits than its factorization.

50643662253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16881220754.

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 50643662253 in words is "fifty billion, six hundred forty-three million, six hundred sixty-two thousand, two hundred fifty-three".