68098720458 has 32 divisors (see below), whose sum is σ = 147990435840. Its totient is φ = 20811152880.

The previous prime is 68098720447. The next prime is 68098720463. The reversal of 68098720458 is 85402789086.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 68098720398 and 68098720407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9631260 + ... + 9638327.

It is an arithmetic number, because the mean of its divisors is an integer number (4624701120).

Almost surely, 2^68098720458 is an apocalyptic number.

68098720458 is an abundant number, since it is smaller than the sum of its proper divisors (79891715382).

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

68098720458 is a wasteful number, since it uses less digits than its factorization.

68098720458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19269642.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 68098720458 in words is "sixty-eight billion, ninety-eight million, seven hundred twenty thousand, four hundred fifty-eight".