50670385921 has 4 divisors (see below), whose sum is σ = 50832272452. Its totient is φ = 50508499392.

The previous prime is 50670385903. The next prime is 50670385979. The reversal of 50670385921 is 12958307605.

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 9858305521 + 40812080400 = 99289^2 + 202020^2 .

It is a cyclic number.

It is not a de Polignac number, because 50670385921 - 2¹¹ = 50670383873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50670385991) 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, 80942796 + ... + 80943421.

It is an arithmetic number, because the mean of its divisors is an integer number (12708068113).

Almost surely, 2^50670385921 is an apocalyptic number.

It is an amenable number.

50670385921 is a deficient number, since it is larger than the sum of its proper divisors (161886531).

50670385921 is a wasteful number, since it uses less digits than its factorization.

50670385921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161886530.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 50670385921 in words is "fifty billion, six hundred seventy million, three hundred eighty-five thousand, nine hundred twenty-one".