50870732921 has 4 divisors (see below), whose sum is σ = 51207625344. Its totient is φ = 50533840500.

The previous prime is 50870732917. The next prime is 50870732959. The reversal of 50870732921 is 12923707805.

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 50870732921 - 2² = 50870732917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50870732971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168445985 + ... + 168446286.

It is an arithmetic number, because the mean of its divisors is an integer number (12801906336).

Almost surely, 2^50870732921 is an apocalyptic number.

It is an amenable number.

50870732921 is a deficient number, since it is larger than the sum of its proper divisors (336892423).

50870732921 is a wasteful number, since it uses less digits than its factorization.

50870732921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336892422.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 50870732921 in words is "fifty billion, eight hundred seventy million, seven hundred thirty-two thousand, nine hundred twenty-one".