50154443330021 has 4 divisors (see below), whose sum is σ = 50155271008044. Its totient is φ = 50153615652000.

The previous prime is 50154443329999. The next prime is 50154443330029. The reversal of 50154443330021 is 12003334445105.

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 21487906605025 + 28666536724996 = 4635505^2 + 5354114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50154443330021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50154443330029) 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, 413748110 + ... + 413869311.

It is an arithmetic number, because the mean of its divisors is an integer number (12538817752011).

Almost surely, 2^{50154443330021} is an apocalyptic number.

It is an amenable number.

50154443330021 is a deficient number, since it is larger than the sum of its proper divisors (827678023).

50154443330021 is an equidigital number, since it uses as much as digits as its factorization.

50154443330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827678022.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 50154443330021 its reverse (12003334445105), we get a palindrome (62157777775126).

The spelling of 50154443330021 in words is "fifty trillion, one hundred fifty-four billion, four hundred forty-three million, three hundred thirty thousand, twenty-one".