16686577152 has 160 divisors (see below), whose sum is σ = 56449958400. Its totient is φ = 4767565824.

The previous prime is 16686577139. The next prime is 16686577153. The reversal of 16686577152 is 25177568661.

It is a happy number.

16686577152 is a `hidden beast` number, since 1 + 6 + 68 + 6 + 577 + 1 + 5 + 2 = 666.

It is a super-2 number, since 2×16686577152² (a number of 21 digits) contains 22 as substring.

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 (16686577153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10549 + ... + 182987.

It is an arithmetic number, because the mean of its divisors is an integer number (352812240).

Almost surely, 2^16686577152 is an apocalyptic number.

16686577152 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 16686577152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28224979200).

16686577152 is an abundant number, since it is smaller than the sum of its proper divisors (39763381248).

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

16686577152 is an equidigital number, since it uses as much as digits as its factorization.

16686577152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172473 (or 172451 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The spelling of 16686577152 in words is "sixteen billion, six hundred eighty-six million, five hundred seventy-seven thousand, one hundred fifty-two".