51043211409 has 8 divisors (see below), whose sum is σ = 71639595040. Its totient is φ = 32237817696.

The previous prime is 51043211407. The next prime is 51043211411. The reversal of 51043211409 is 90411234015.

It is an interprime number because it is at equal distance from previous prime (51043211407) and next prime (51043211411).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51043211409 - 2¹ = 51043211407 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51043211407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447747412 + ... + 447747525.

It is an arithmetic number, because the mean of its divisors is an integer number (8954949380).

Almost surely, 2^51043211409 is an apocalyptic number.

It is an amenable number.

51043211409 is a deficient number, since it is larger than the sum of its proper divisors (20596383631).

51043211409 is a wasteful number, since it uses less digits than its factorization.

51043211409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895494959.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 51043211409 in words is "fifty-one billion, forty-three million, two hundred eleven thousand, four hundred nine".