51585078276 has 18 divisors (see below), whose sum is σ = 130395614622. Its totient is φ = 17195026080.

The previous prime is 51585078191. The next prime is 51585078289. The reversal of 51585078276 is 67287058515.

51585078276 is a `hidden beast` number, since 5 + 1 + 58 + 507 + 82 + 7 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 41545038276 + 10040040000 = 203826^2 + 100200^2 .

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

It is a super-2 number, since 2×51585078276² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 716459385 + ... + 716459456.

Almost surely, 2^51585078276 is an apocalyptic number.

It is an amenable number.

51585078276 is an abundant number, since it is smaller than the sum of its proper divisors (78810536346).

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

51585078276 is a wasteful number, since it uses less digits than its factorization.

51585078276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432918851 (or 1432918846 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 54.

The spelling of 51585078276 in words is "fifty-one billion, five hundred eighty-five million, seventy-eight thousand, two hundred seventy-six".