1669982469120 has 1848 divisors, whose sum is σ = 7309007784864. Its totient is φ = 364194496512.

The previous prime is 1669982469109. The next prime is 1669982469121. The reversal of 1669982469120 is 219642899661.

1669982469120 is a `hidden beast` number, since 1 + 6 + 6 + 99 + 82 + 469 + 1 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669982469121) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 4206504762 + ... + 4206505158.

Almost surely, 2^{1669982469120} is an apocalyptic number.

1669982469120 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 1669982469120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3654503892432).

1669982469120 is an abundant number, since it is smaller than the sum of its proper divisors (5639025315744).

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

1669982469120 is an equidigital number, since it uses as much as digits as its factorization.

1669982469120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 63.

The spelling of 1669982469120 in words is "one trillion, six hundred sixty-nine billion, nine hundred eighty-two million, four hundred sixty-nine thousand, one hundred twenty".