16690652681472 has 3456 divisors, whose sum is σ = 69336613785600. Its totient is φ = 3950456832000.

The previous prime is 16690652681449. The next prime is 16690652681501. The reversal of 16690652681472 is 27418625609661.

16690652681472 is a `hidden beast` number, since 1 + 6 + 6 + 9 + 0 + 65 + 26 + 81 + 472 = 666.

It is a tau number, because it is divible by the number of its divisors (3456).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 235079615197 + ... + 235079615267.

It is an arithmetic number, because the mean of its divisors is an integer number (20062677600).

Almost surely, 2^{16690652681472} is an apocalyptic number.

16690652681472 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 16690652681472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34668306892800).

16690652681472 is an abundant number, since it is smaller than the sum of its proper divisors (52645961104128).

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

16690652681472 is an equidigital number, since it uses as much as digits as its factorization.

16690652681472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 16690652681472 in words is "sixteen trillion, six hundred ninety billion, six hundred fifty-two million, six hundred eighty-one thousand, four hundred seventy-two".