68406889610 has 16 divisors (see below), whose sum is σ = 123163891200. Its totient is φ = 27355758096.

The previous prime is 68406889589. The next prime is 68406889739. The reversal of 68406889610 is 1698860486.

It is a super-2 number, since 2×68406889610² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833570 + ... + 911949.

It is an arithmetic number, because the mean of its divisors is an integer number (7697743200).

Almost surely, 2^68406889610 is an apocalyptic number.

68406889610 is a deficient number, since it is larger than the sum of its proper divisors (54757001590).

68406889610 is a wasteful number, since it uses less digits than its factorization.

68406889610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749445.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 68406889610 in words is "sixty-eight billion, four hundred six million, eight hundred eighty-nine thousand, six hundred ten".