668898187752 has 16 divisors (see below), whose sum is σ = 1672245469440. Its totient is φ = 222966062576.

The previous prime is 668898187751. The next prime is 668898187753. The reversal of 668898187752 is 257781898866.

It is an interprime number because it is at equal distance from previous prime (668898187751) and next prime (668898187753).

It is not an unprimeable number, because it can be changed into a prime (668898187751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13935378888 + ... + 13935378935.

It is an arithmetic number, because the mean of its divisors is an integer number (104515341840).

Almost surely, 2^668898187752 is an apocalyptic number.

It is an amenable number.

668898187752 is an abundant number, since it is smaller than the sum of its proper divisors (1003347281688).

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

668898187752 is a wasteful number, since it uses less digits than its factorization.

668898187752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27870757832 (or 27870757828 counting only the distinct ones).

The product of its digits is 650280960, while the sum is 75.

The spelling of 668898187752 in words is "six hundred sixty-eight billion, eight hundred ninety-eight million, one hundred eighty-seven thousand, seven hundred fifty-two".