50765648921 has 16 divisors (see below), whose sum is σ = 60050202240. Its totient is φ = 42464062080.

The previous prime is 50765648911. The next prime is 50765648953. The reversal of 50765648921 is 12984656705.

It is a cyclic number.

It is not a de Polignac number, because 50765648921 - 2³⁴ = 33585779737 is a prime.

It is a super-2 number, since 2×50765648921² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50765648911) 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 15 ways as a sum of consecutive naturals, for example, 4462340 + ... + 4473701.

It is an arithmetic number, because the mean of its divisors is an integer number (3753137640).

Almost surely, 2^50765648921 is an apocalyptic number.

It is an amenable number.

50765648921 is a deficient number, since it is larger than the sum of its proper divisors (9284553319).

50765648921 is a wasteful number, since it uses less digits than its factorization.

50765648921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8936096.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 50765648921 in words is "fifty billion, seven hundred sixty-five million, six hundred forty-eight thousand, nine hundred twenty-one".