668888235098 has 16 divisors (see below), whose sum is σ = 1018527074304. Its totient is φ = 329381363520.

The previous prime is 668888235089. The next prime is 668888235101. The reversal of 668888235098 is 890532888866.

It is a super-2 number, since 2×668888235098² (a number of 24 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 88103 + ... + 1159973.

It is an arithmetic number, because the mean of its divisors is an integer number (63657942144).

Almost surely, 2^668888235098 is an apocalyptic number.

668888235098 is a deficient number, since it is larger than the sum of its proper divisors (349638839206).

668888235098 is a wasteful number, since it uses less digits than its factorization.

668888235098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076597.

The product of its (nonzero) digits is 318504960, while the sum is 71.

The spelling of 668888235098 in words is "six hundred sixty-eight billion, eight hundred eighty-eight million, two hundred thirty-five thousand, ninety-eight".