63969474492 has 768 divisors, whose sum is σ = 225043660800. Its totient is φ = 15232250880.

The previous prime is 63969474451. The next prime is 63969474509. The reversal of 63969474492 is 29447496936.

63969474492 is a `hidden beast` number, since 6 + 396 + 94 + 74 + 4 + 92 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 597845503 + ... + 597845609.

It is an arithmetic number, because the mean of its divisors is an integer number (293025600).

Almost surely, 2^63969474492 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 63969474492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112521830400).

63969474492 is an abundant number, since it is smaller than the sum of its proper divisors (161074186308).

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

63969474492 is a wasteful number, since it uses less digits than its factorization.

63969474492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 263 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 63.

The spelling of 63969474492 in words is "sixty-three billion, nine hundred sixty-nine million, four hundred seventy-four thousand, four hundred ninety-two".