52655868046781 has 8 divisors (see below), whose sum is σ = 52689745596600. Its totient is φ = 52621991930880.

The previous prime is 52655868046777. The next prime is 52655868046811. The reversal of 52655868046781 is 18764086855625.

It can be written as a sum of positive squares in 4 ways, for example, as 13182229378756 + 39473638668025 = 3630734^2 + 6282805^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52655868046781 - 2² = 52655868046777 is a prime.

It is a super-2 number, since 2×52655868046781² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52655868046721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78702575 + ... + 79368803.

It is an arithmetic number, because the mean of its divisors is an integer number (6586218199575).

Almost surely, 2^{52655868046781} is an apocalyptic number.

It is an amenable number.

52655868046781 is a deficient number, since it is larger than the sum of its proper divisors (33877549819).

52655868046781 is a wasteful number, since it uses less digits than its factorization.

52655868046781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716959.

The product of its (nonzero) digits is 774144000, while the sum is 71.

The spelling of 52655868046781 in words is "fifty-two trillion, six hundred fifty-five billion, eight hundred sixty-eight million, forty-six thousand, seven hundred eighty-one".