63855362149 has 4 divisors (see below), whose sum is σ = 63857777164. Its totient is φ = 63852947136.

The previous prime is 63855362147. The next prime is 63855362201. The reversal of 63855362149 is 94126355836.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41916420225 + 21938941924 = 204735^2 + 148118^2 .

It is a cyclic number.

It is not a de Polignac number, because 63855362149 - 2¹ = 63855362147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63855362096 and 63855362105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63855362147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167402 + ... + 1220875.

It is an arithmetic number, because the mean of its divisors is an integer number (15964444291).

Almost surely, 2^63855362149 is an apocalyptic number.

It is an amenable number.

63855362149 is a deficient number, since it is larger than the sum of its proper divisors (2415015).

63855362149 is a wasteful number, since it uses less digits than its factorization.

63855362149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415014.

The product of its digits is 4665600, while the sum is 52.

The spelling of 63855362149 in words is "sixty-three billion, eight hundred fifty-five million, three hundred sixty-two thousand, one hundred forty-nine".