51346341449 has 4 divisors (see below), whose sum is σ = 55296060036. Its totient is φ = 47396622864.

The previous prime is 51346341443. The next prime is 51346341451. The reversal of 51346341449 is 94414364315.

It is a happy number.

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 5003015824 + 46343325625 = 70732^2 + 215275^2 .

It is a cyclic number.

It is not a de Polignac number, because 51346341449 - 2⁴ = 51346341433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51346341443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1974859274 + ... + 1974859299.

It is an arithmetic number, because the mean of its divisors is an integer number (13824015009).

Almost surely, 2^51346341449 is an apocalyptic number.

It is an amenable number.

51346341449 is a deficient number, since it is larger than the sum of its proper divisors (3949718587).

51346341449 is a wasteful number, since it uses less digits than its factorization.

51346341449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949718586.

The product of its digits is 622080, while the sum is 44.

The spelling of 51346341449 in words is "fifty-one billion, three hundred forty-six million, three hundred forty-one thousand, four hundred forty-nine".