50657821806 has 8 divisors (see below), whose sum is σ = 101315643624. Its totient is φ = 16885940600.

The previous prime is 50657821787. The next prime is 50657821811. The reversal of 50657821806 is 60812875605.

50657821806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

50657821806 is an admirable number.

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, 4221485145 + ... + 4221485156.

It is an arithmetic number, because the mean of its divisors is an integer number (12664455453).

Almost surely, 2^50657821806 is an apocalyptic number.

50657821806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50657821806 is a wasteful number, since it uses less digits than its factorization.

50657821806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8442970306.

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 50657821806 in words is "fifty billion, six hundred fifty-seven million, eight hundred twenty-one thousand, eight hundred six".