16550523252 has 18 divisors (see below), whose sum is σ = 41836044978. Its totient is φ = 5516841072.

The previous prime is 16550523251. The next prime is 16550523277. The reversal of 16550523252 is 25232505561.

16550523252 is a `hidden beast` number, since 1 + 6 + 550 + 52 + 3 + 2 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12233244816 + 4317278436 = 110604^2 + 65706^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×16550523252³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 459736757 = 16550523252 / (1 + 6 + 5 + 5 + 0 + 5 + 2 + 3 + 2 + 5 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16550523251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229868343 + ... + 229868414.

It is an arithmetic number, because the mean of its divisors is an integer number (2324224721).

Almost surely, 2^16550523252 is an apocalyptic number.

16550523252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16550523252 is an abundant number, since it is smaller than the sum of its proper divisors (25285521726).

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

16550523252 is a wasteful number, since it uses less digits than its factorization.

16550523252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459736767 (or 459736762 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

The spelling of 16550523252 in words is "sixteen billion, five hundred fifty million, five hundred twenty-three thousand, two hundred fifty-two".