1669887611616 has 144 divisors (see below), whose sum is σ = 5287207250304. Its totient is φ = 451999588608.

The previous prime is 1669887611603. The next prime is 1669887611677. The reversal of 1669887611616 is 6161167889661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3199170 + ... + 3684353.

It is an arithmetic number, because the mean of its divisors is an integer number (36716717016).

Almost surely, 2^{1669887611616} is an apocalyptic number.

1669887611616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1669887611616 is an abundant number, since it is smaller than the sum of its proper divisors (3617319638688).

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

1669887611616 is a wasteful number, since it uses less digits than its factorization.

1669887611616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6883581 (or 6883554 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 66.

The spelling of 1669887611616 in words is "one trillion, six hundred sixty-nine billion, eight hundred eighty-seven million, six hundred eleven thousand, six hundred sixteen".