68636861032320 has 384 divisors, whose sum is σ = 280902713495040. Its totient is φ = 15688425129984.

The previous prime is 68636861032297. The next prime is 68636861032331. The reversal of 68636861032320 is 2323016863686.

68636861032320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×68636861032320² (a number of 28 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30435492 + ... + 32612771.

It is an arithmetic number, because the mean of its divisors is an integer number (731517483060).

Almost surely, 2^{68636861032320} is an apocalyptic number.

68636861032320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68636861032320 is an abundant number, since it is smaller than the sum of its proper divisors (212265852462720).

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

68636861032320 is an equidigital number, since it uses as much as digits as its factorization.

68636861032320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63048304 (or 63048280 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 54.

The spelling of 68636861032320 in words is "sixty-eight trillion, six hundred thirty-six billion, eight hundred sixty-one million, thirty-two thousand, three hundred twenty".