53866812149 has 8 divisors (see below), whose sum is σ = 55744043160. Its totient is φ = 51990898176.

The previous prime is 53866812127. The next prime is 53866812151. The reversal of 53866812149 is 94121866835.

It can be written as a sum of positive squares in 4 ways, for example, as 39564100 + 53827248049 = 6290^2 + 232007^2 .

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 53866812149 - 2⁸ = 53866811893 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 53866812149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53866812169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245672 + ... + 409985.

It is an arithmetic number, because the mean of its divisors is an integer number (6968005395).

Almost surely, 2^53866812149 is an apocalyptic number.

It is an amenable number.

53866812149 is a deficient number, since it is larger than the sum of its proper divisors (1877231011).

53866812149 is a wasteful number, since it uses less digits than its factorization.

53866812149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658519.

The product of its digits is 2488320, while the sum is 53.

The spelling of 53866812149 in words is "fifty-three billion, eight hundred sixty-six million, eight hundred twelve thousand, one hundred forty-nine".