50420326721 has 8 divisors (see below), whose sum is σ = 52069139304. Its totient is φ = 48786572160.

The previous prime is 50420326717. The next prime is 50420326807. The reversal of 50420326721 is 12762302405.

It can be written as a sum of positive squares in 4 ways, for example, as 2792065600 + 47628261121 = 52840^2 + 218239^2 .

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 50420326721 - 2² = 50420326717 is a prime.

It is a super-2 number, since 2×50420326721² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50420326421) 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, 3757700 + ... + 3771093.

It is an arithmetic number, because the mean of its divisors is an integer number (6508642413).

Almost surely, 2^50420326721 is an apocalyptic number.

It is an amenable number.

50420326721 is a deficient number, since it is larger than the sum of its proper divisors (1648812583).

50420326721 is a wasteful number, since it uses less digits than its factorization.

50420326721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7529011.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 50420326721 in words is "fifty billion, four hundred twenty million, three hundred twenty-six thousand, seven hundred twenty-one".