63897834000 has 640 divisors, whose sum is σ = 276622295040. Its totient is φ = 12254976000.

The previous prime is 63897833983. The next prime is 63897834017. The reversal of 63897834000 is 43879836.

It is an interprime number because it is at equal distance from previous prime (63897833983) and next prime (63897834017).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6000681 + ... + 6011319.

It is an arithmetic number, because the mean of its divisors is an integer number (432222336).

Almost surely, 2^63897834000 is an apocalyptic number.

63897834000 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 63897834000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138311147520).

63897834000 is an abundant number, since it is smaller than the sum of its proper divisors (212724461040).

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

63897834000 is a wasteful number, since it uses less digits than its factorization.

63897834000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10696 (or 10680 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 63897834000 in words is "sixty-three billion, eight hundred ninety-seven million, eight hundred thirty-four thousand".