50724321721 has 8 divisors (see below), whose sum is σ = 51065363520. Its totient is φ = 50383921008.

The previous prime is 50724321709. The next prime is 50724321751. The reversal of 50724321721 is 12712342705.

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

It is a cyclic number.

It is not a de Polignac number, because 50724321721 - 2⁹ = 50724321209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50724321701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966 + ... + 318511.

It is an arithmetic number, because the mean of its divisors is an integer number (6383170440).

Almost surely, 2^50724321721 is an apocalyptic number.

It is an amenable number.

50724321721 is a deficient number, since it is larger than the sum of its proper divisors (341041799).

50724321721 is a wasteful number, since it uses less digits than its factorization.

50724321721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320543.

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 50724321721 in words is "fifty billion, seven hundred twenty-four million, three hundred twenty-one thousand, seven hundred twenty-one".