51446480019 has 16 divisors (see below), whose sum is σ = 74839002624. Its totient is φ = 31176452000.

The previous prime is 51446479999. The next prime is 51446480023. The reversal of 51446480019 is 91008464415.

It is a cyclic number.

It is not a de Polignac number, because 51446480019 - 2⁹ = 51446479507 is a prime.

It is a super-2 number, since 2×51446480019² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51446480039) 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 15 ways as a sum of consecutive naturals, for example, 264262 + ... + 415604.

It is an arithmetic number, because the mean of its divisors is an integer number (4677437664).

Almost surely, 2^51446480019 is an apocalyptic number.

51446480019 is a deficient number, since it is larger than the sum of its proper divisors (23392522605).

51446480019 is a wasteful number, since it uses less digits than its factorization.

51446480019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161658.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 51446480019 in words is "fifty-one billion, four hundred forty-six million, four hundred eighty thousand, nineteen".