1669963159788 has 216 divisors, whose sum is σ = 5143012503552. Its totient is φ = 419763960000.

The previous prime is 1669963159771. The next prime is 1669963159789. The reversal of 1669963159788 is 8879513699661.

It is not an unprimeable number, because it can be changed into a prime (1669963159789) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1827013 + ... + 2584163.

It is an arithmetic number, because the mean of its divisors is an integer number (23810243072).

Almost surely, 2^{1669963159788} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669963159788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2571506251776).

1669963159788 is an abundant number, since it is smaller than the sum of its proper divisors (3473049343764).

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

1669963159788 is a wasteful number, since it uses less digits than its factorization.

1669963159788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757225 (or 757205 counting only the distinct ones).

The product of its digits is 1058158080, while the sum is 78.

The spelling of 1669963159788 in words is "one trillion, six hundred sixty-nine billion, nine hundred sixty-three million, one hundred fifty-nine thousand, seven hundred eighty-eight".