63249851808 has 432 divisors, whose sum is σ = 220841214048. Its totient is φ = 17688844800.

The previous prime is 63249851803. The next prime is 63249851809. The reversal of 63249851808 is 80815894236.

63249851808 is a `hidden beast` number, since 6 + 32 + 4 + 98 + 518 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (63249851801) 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 71 ways as a sum of consecutive naturals, for example, 12229063 + ... + 12234233.

It is an arithmetic number, because the mean of its divisors is an integer number (511206514).

Almost surely, 2^63249851808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63249851808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110420607024).

63249851808 is an abundant number, since it is smaller than the sum of its proper divisors (157591362240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63249851808 is a wasteful number, since it uses less digits than its factorization.

63249851808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231 (or 5200 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 63249851808 in words is "sixty-three billion, two hundred forty-nine million, eight hundred fifty-one thousand, eight hundred eight".