50400222750721 has 4 divisors (see below), whose sum is σ = 50678677020244. Its totient is φ = 50121768481200.

The previous prime is 50400222750653. The next prime is 50400222750769. The reversal of 50400222750721 is 12705722200405.

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 11823701750721 + 38576521000000 = 3438561^2 + 6211000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50400222750721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50400222751721) 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, 139227134490 + ... + 139227134851.

It is an arithmetic number, because the mean of its divisors is an integer number (12669669255061).

Almost surely, 2^{50400222750721} is an apocalyptic number.

It is an amenable number.

50400222750721 is a deficient number, since it is larger than the sum of its proper divisors (278454269523).

50400222750721 is a wasteful number, since it uses less digits than its factorization.

50400222750721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278454269522.

The product of its (nonzero) digits is 78400, while the sum is 37.

The spelling of 50400222750721 in words is "fifty trillion, four hundred billion, two hundred twenty-two million, seven hundred fifty thousand, seven hundred twenty-one".