63490936320 has 1600 divisors, whose sum is σ = 287477600256. Its totient is φ = 13058703360.

The previous prime is 63490936297. The next prime is 63490936321. The reversal of 63490936320 is 2363909436.

63490936320 is a `hidden beast` number, since 6 + 3 + 4 + 9 + 0 + 9 + 3 + 632 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63490936321) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 764950999 + ... + 764951081.

Almost surely, 2^63490936320 is an apocalyptic number.

63490936320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63490936320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143738800128).

63490936320 is an abundant number, since it is smaller than the sum of its proper divisors (223986663936).

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

63490936320 is a wasteful number, since it uses less digits than its factorization.

63490936320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 45.

The spelling of 63490936320 in words is "sixty-three billion, four hundred ninety million, nine hundred thirty-six thousand, three hundred twenty".