1668349935288 has 64 divisors (see below), whose sum is σ = 4783799116800. Its totient is φ = 538177396320.

The previous prime is 1668349935283. The next prime is 1668349935337. The reversal of 1668349935288 is 8825399438661.

It is a happy number.

1668349935288 is a `hidden beast` number, since 1 + 6 + 6 + 8 + 3 + 4 + 9 + 93 + 528 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668349935283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124571406 + ... + 124584797.

It is an arithmetic number, because the mean of its divisors is an integer number (74746861200).

Almost surely, 2^{1668349935288} is an apocalyptic number.

1668349935288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1668349935288 is an abundant number, since it is smaller than the sum of its proper divisors (3115449181512).

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

1668349935288 is a wasteful number, since it uses less digits than its factorization.

1668349935288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249156249 (or 249156239 counting only the distinct ones).

The product of its digits is 537477120, while the sum is 72.

The spelling of 1668349935288 in words is "one trillion, six hundred sixty-eight billion, three hundred forty-nine million, nine hundred thirty-five thousand, two hundred eighty-eight".