51441627019 has 4 divisors (see below), whose sum is σ = 51668242344. Its totient is φ = 51215011696.

The previous prime is 51441626909. The next prime is 51441627113. The reversal of 51441627019 is 91072614415.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51441627019 is a prime.

It is a super-2 number, since 2×51441627019² (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 (51441625019) 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, 113307322 + ... + 113307775.

It is an arithmetic number, because the mean of its divisors is an integer number (12917060586).

Almost surely, 2^51441627019 is an apocalyptic number.

51441627019 is a deficient number, since it is larger than the sum of its proper divisors (226615325).

51441627019 is a wasteful number, since it uses less digits than its factorization.

51441627019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226615324.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 51441627019 in words is "fifty-one billion, four hundred forty-one million, six hundred twenty-seven thousand, nineteen".