63922978368 has 336 divisors, whose sum is σ = 193514106240. Its totient is φ = 20152737792.

The previous prime is 63922978337. The next prime is 63922978373. The reversal of 63922978368 is 86387922936.

It is a super-2 number, since 2×63922978368² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 127083205 + ... + 127083707.

It is an arithmetic number, because the mean of its divisors is an integer number (575934840).

Almost surely, 2^63922978368 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 63922978368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96757053120).

63922978368 is an abundant number, since it is smaller than the sum of its proper divisors (129591127872).

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

63922978368 is a wasteful number, since it uses less digits than its factorization.

63922978368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714 (or 701 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 63.

The spelling of 63922978368 in words is "sixty-three billion, nine hundred twenty-two million, nine hundred seventy-eight thousand, three hundred sixty-eight".