52418457861 has 32 divisors (see below), whose sum is σ = 87168918528. Its totient is φ = 27220448640.

The previous prime is 52418457823. The next prime is 52418457911. The reversal of 52418457861 is 16875481425.

It is a happy number.

It is not a de Polignac number, because 52418457861 - 2⁷ = 52418457733 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52418457361) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 616825 + ... + 696641.

It is an arithmetic number, because the mean of its divisors is an integer number (2724028704).

Almost surely, 2^52418457861 is an apocalyptic number.

It is an amenable number.

52418457861 is a deficient number, since it is larger than the sum of its proper divisors (34750460667).

52418457861 is a wasteful number, since it uses less digits than its factorization.

52418457861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82681.

The product of its digits is 2150400, while the sum is 51.

The spelling of 52418457861 in words is "fifty-two billion, four hundred eighteen million, four hundred fifty-seven thousand, eight hundred sixty-one".