1669701318660 has 384 divisors, whose sum is σ = 5564392243200. Its totient is φ = 414735552000.

The previous prime is 1669701318643. The next prime is 1669701318697. The reversal of 1669701318660 is 668131079661.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1669701318597 and 1669701318606.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 160682065 + ... + 160692455.

It is an arithmetic number, because the mean of its divisors is an integer number (14490604800).

Almost surely, 2^{1669701318660} is an apocalyptic number.

1669701318660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669701318660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2782196121600).

1669701318660 is an abundant number, since it is smaller than the sum of its proper divisors (3894690924540).

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

1669701318660 is a wasteful number, since it uses less digits than its factorization.

1669701318660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10800 (or 10792 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 1669701318660 in words is "one trillion, six hundred sixty-nine billion, seven hundred one million, three hundred eighteen thousand, six hundred sixty".