51041444021 has 8 divisors (see below), whose sum is σ = 51097601760. Its totient is φ = 50985314352.

The previous prime is 51041444009. The next prime is 51041444033. The reversal of 51041444021 is 12044414015.

51041444021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51041444009) and next prime (51041444033).

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 51041444021 - 2²² = 51037249717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51041449021) 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, 6979715 + ... + 6987023.

It is an arithmetic number, because the mean of its divisors is an integer number (6387200220).

Almost surely, 2^51041444021 is an apocalyptic number.

It is an amenable number.

51041444021 is a deficient number, since it is larger than the sum of its proper divisors (56157739).

51041444021 is a wasteful number, since it uses less digits than its factorization.

51041444021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14035.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 51041444021 its reverse (12044414015), we get a palindrome (63085858036).

The spelling of 51041444021 in words is "fifty-one billion, forty-one million, four hundred forty-four thousand, twenty-one".