51064322004 has 18 divisors (see below), whose sum is σ = 129079258490. Its totient is φ = 17021440656.

The previous prime is 51064321991. The next prime is 51064322009. The reversal of 51064322004 is 40022346015.

51064322004 is a `hidden beast` number, since 5 + 10 + 643 + 2 + 2 + 0 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39341929104 + 11722392900 = 198348^2 + 108270^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51064322009) 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 5 ways as a sum of consecutive naturals, for example, 709226659 + ... + 709226730.

Almost surely, 2^51064322004 is an apocalyptic number.

It is an amenable number.

51064322004 is an abundant number, since it is smaller than the sum of its proper divisors (78014936486).

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

51064322004 is a wasteful number, since it uses less digits than its factorization.

51064322004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418453399 (or 1418453394 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 51064322004 its reverse (40022346015), we get a palindrome (91086668019).

The spelling of 51064322004 in words is "fifty-one billion, sixty-four million, three hundred twenty-two thousand, four".