1699688813472 has 480 divisors, whose sum is σ = 5509232112384. Its totient is φ = 510789888000.

The previous prime is 1699688813461. The next prime is 1699688813509. The reversal of 1699688813472 is 2743188869961.

1699688813472 is a `hidden beast` number, since 1 + 6 + 9 + 9 + 68 + 88 + 13 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 1699688813472.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1110181347 + ... + 1110182877.

Almost surely, 2^{1699688813472} is an apocalyptic number.

1699688813472 is a gapful number since it is divisible by the number (12) 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 1699688813472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2754616056192).

1699688813472 is an abundant number, since it is smaller than the sum of its proper divisors (3809543298912).

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

1699688813472 is a wasteful number, since it uses less digits than its factorization.

1699688813472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314 (or 2297 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 72.

The spelling of 1699688813472 in words is "one trillion, six hundred ninety-nine billion, six hundred eighty-eight million, eight hundred thirteen thousand, four hundred seventy-two".