52185488178861 has 12 divisors (see below), whose sum is σ = 75379197095488. Its totient is φ = 34790252245704.

The previous prime is 52185488178839. The next prime is 52185488178877. The reversal of 52185488178861 is 16887188458125.

It is a happy number.

52185488178861 is a `hidden beast` number, since 5 + 2 + 1 + 8 + 5 + 488 + 1 + 7 + 88 + 61 = 666.

It is not a de Polignac number, because 52185488178861 - 2⁹ = 52185488178349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52185488178861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52185488178661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1394815 + ... + 10310988.

Almost surely, 2^{52185488178861} is an apocalyptic number.

It is an amenable number.

52185488178861 is a deficient number, since it is larger than the sum of its proper divisors (23193708916627).

52185488178861 is a wasteful number, since it uses less digits than its factorization.

52185488178861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12201152 (or 12201149 counting only the distinct ones).

The product of its digits is 275251200, while the sum is 72.

The spelling of 52185488178861 in words is "fifty-two trillion, one hundred eighty-five billion, four hundred eighty-eight million, one hundred seventy-eight thousand, eight hundred sixty-one".