51447812079 has 24 divisors (see below), whose sum is σ = 73043994240. Its totient is φ = 32203709824.

The previous prime is 51447812069. The next prime is 51447812089. The reversal of 51447812079 is 97021874415.

It is an interprime number because it is at equal distance from previous prime (51447812069) and next prime (51447812089).

It is not a de Polignac number, because 51447812079 - 2⁷ = 51447811951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51447812069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 292462 + ... + 434084.

It is an arithmetic number, because the mean of its divisors is an integer number (3043499760).

Almost surely, 2^51447812079 is an apocalyptic number.

51447812079 is a deficient number, since it is larger than the sum of its proper divisors (21596182161).

51447812079 is a wasteful number, since it uses less digits than its factorization.

51447812079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142079 (or 142062 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 51447812079 in words is "fifty-one billion, four hundred forty-seven million, eight hundred twelve thousand, seventy-nine".