63483987861 has 36 divisors (see below), whose sum is σ = 112284619200. Its totient is φ = 34367267088.

The previous prime is 63483987817. The next prime is 63483987871. The reversal of 63483987861 is 16878938436.

63483987861 is a `hidden beast` number, since 6 + 3 + 483 + 98 + 7 + 8 + 61 = 666.

It is not a de Polignac number, because 63483987861 - 2¹⁰ = 63483986837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63483987871) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3779901 + ... + 3796658.

It is an arithmetic number, because the mean of its divisors is an integer number (3119017200).

Almost surely, 2^63483987861 is an apocalyptic number.

It is an amenable number.

63483987861 is a deficient number, since it is larger than the sum of its proper divisors (48800631339).

63483987861 is a wasteful number, since it uses less digits than its factorization.

63483987861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7576598 (or 7576588 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The spelling of 63483987861 in words is "sixty-three billion, four hundred eighty-three million, nine hundred eighty-seven thousand, eight hundred sixty-one".