68707813920 has 96 divisors (see below), whose sum is σ = 219660009408. Its totient is φ = 18048611328.

The previous prime is 68707813903. The next prime is 68707813939. The reversal of 68707813920 is 2931870786.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1036059 + ... + 1100378.

It is an arithmetic number, because the mean of its divisors is an integer number (2288125098).

Almost surely, 2^68707813920 is an apocalyptic number.

68707813920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68707813920 is an abundant number, since it is smaller than the sum of its proper divisors (150952195488).

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

68707813920 is a wasteful number, since it uses less digits than its factorization.

68707813920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136522 (or 2136514 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 68707813920 in words is "sixty-eight billion, seven hundred seven million, eight hundred thirteen thousand, nine hundred twenty".