51346030489 has 4 divisors (see below), whose sum is σ = 55295725156. Its totient is φ = 47396335824.

The previous prime is 51346030423. The next prime is 51346030511. The reversal of 51346030489 is 98403064315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98403064315 = 5 ⋅19680612863.

It can be written as a sum of positive squares in 2 ways, for example, as 31609995264 + 19736035225 = 177792^2 + 140485^2 .

It is a cyclic number.

It is not a de Polignac number, because 51346030489 - 2¹¹ = 51346028441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51346030889) 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, 1974847314 + ... + 1974847339.

It is an arithmetic number, because the mean of its divisors is an integer number (13823931289).

Almost surely, 2^51346030489 is an apocalyptic number.

It is an amenable number.

51346030489 is a deficient number, since it is larger than the sum of its proper divisors (3949694667).

51346030489 is a wasteful number, since it uses less digits than its factorization.

51346030489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949694666.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 51346030489 in words is "fifty-one billion, three hundred forty-six million, thirty thousand, four hundred eighty-nine".