51284004480 has 96 divisors (see below), whose sum is σ = 177090097860. Its totient is φ = 13675732992.

The previous prime is 51284004479. The next prime is 51284004487. The reversal of 51284004480 is 8440048215.

It can be written as a sum of positive squares in 2 ways, for example, as 46873982016 + 4410022464 = 216504^2 + 66408^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51284004487) 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 11 ways as a sum of consecutive naturals, for example, 4445977 + ... + 4457496.

Almost surely, 2^51284004480 is an apocalyptic number.

It is an amenable number.

51284004480 is an abundant number, since it is smaller than the sum of its proper divisors (125806093380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51284004480 is a wasteful number, since it uses less digits than its factorization.

51284004480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8903498 (or 8903483 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The spelling of 51284004480 in words is "fifty-one billion, two hundred eighty-four million, four thousand, four hundred eighty".