1691100168120 has 128 divisors (see below), whose sum is σ = 6149455200000. Its totient is φ = 409963674240.

The previous prime is 1691100168103. The next prime is 1691100168253. The reversal of 1691100168120 is 218610011961.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71162370 + ... + 71186129.

It is an arithmetic number, because the mean of its divisors is an integer number (48042618750).

Almost surely, 2^{1691100168120} is an apocalyptic number.

1691100168120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1691100168120 is an abundant number, since it is smaller than the sum of its proper divisors (4458355031880).

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

1691100168120 is a wasteful number, since it uses less digits than its factorization.

1691100168120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142348530 (or 142348520 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The spelling of 1691100168120 in words is "one trillion, six hundred ninety-one billion, one hundred million, one hundred sixty-eight thousand, one hundred twenty".