16502166252 has 144 divisors (see below), whose sum is σ = 49087933440. Its totient is φ = 4608316800.

The previous prime is 16502166229. The next prime is 16502166257. The reversal of 16502166252 is 25266120561.

16502166252 is a `hidden beast` number, since 1 + 6 + 5 + 0 + 21 + 6 + 625 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (16502166257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3554949 + ... + 3559587.

Almost surely, 2^16502166252 is an apocalyptic number.

16502166252 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 16502166252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24543966720).

16502166252 is an abundant number, since it is smaller than the sum of its proper divisors (32585767188).

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

16502166252 is a wasteful number, since it uses less digits than its factorization.

16502166252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364 (or 5359 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 16502166252 in words is "sixteen billion, five hundred two million, one hundred sixty-six thousand, two hundred fifty-two".