51443444201 has 16 divisors (see below), whose sum is σ = 58797705600. Its totient is φ = 44715272448.

The previous prime is 51443444189. The next prime is 51443444279. The reversal of 51443444201 is 10244434415.

It is not a de Polignac number, because 51443444201 - 2¹⁸ = 51443182057 is a prime.

It is a super-2 number, since 2×51443444201² (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 (51443444501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2257091 + ... + 2279768.

It is an arithmetic number, because the mean of its divisors is an integer number (3674856600).

Almost surely, 2^51443444201 is an apocalyptic number.

It is an amenable number.

51443444201 is a deficient number, since it is larger than the sum of its proper divisors (7354261399).

51443444201 is a wasteful number, since it uses less digits than its factorization.

51443444201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536928.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 51443444201 its reverse (10244434415), we get a palindrome (61687878616).

The spelling of 51443444201 in words is "fifty-one billion, four hundred forty-three million, four hundred forty-four thousand, two hundred one".