16669591452 has 48 divisors (see below), whose sum is σ = 43234682400. Its totient is φ = 5554316160.

The previous prime is 16669591447. The next prime is 16669591453. The reversal of 16669591452 is 25419596661.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16669591453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253624 + ... + 312512.

It is an arithmetic number, because the mean of its divisors is an integer number (900722550).

Almost surely, 2^16669591452 is an apocalyptic number.

16669591452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16669591452 is an abundant number, since it is smaller than the sum of its proper divisors (26565090948).

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

16669591452 is a wasteful number, since it uses less digits than its factorization.

16669591452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61523 (or 61515 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 16669591452 in words is "sixteen billion, six hundred sixty-nine million, five hundred ninety-one thousand, four hundred fifty-two".