68721519410 has 64 divisors (see below), whose sum is σ = 127941023232. Its totient is φ = 26561074176.

The previous prime is 68721519409. The next prime is 68721519467. The reversal of 68721519410 is 1491512786.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18436967 + ... + 18440693.

It is an arithmetic number, because the mean of its divisors is an integer number (1999078488).

Almost surely, 2^68721519410 is an apocalyptic number.

68721519410 is a deficient number, since it is larger than the sum of its proper divisors (59219503822).

68721519410 is a wasteful number, since it uses less digits than its factorization.

68721519410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227.

The product of its (nonzero) digits is 120960, while the sum is 44.

The spelling of 68721519410 in words is "sixty-eight billion, seven hundred twenty-one million, five hundred nineteen thousand, four hundred ten".