16570538145 has 64 divisors (see below), whose sum is σ = 34082926080. Its totient is φ = 7575068160.

The previous prime is 16570538141. The next prime is 16570538177. The reversal of 16570538145 is 54183507561.

16570538145 is a `hidden beast` number, since 1 + 6 + 5 + 70 + 538 + 1 + 45 = 666.

It is not a de Polignac number, because 16570538145 - 2² = 16570538141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16570538145.

It is not an unprimeable number, because it can be changed into a prime (16570538141) 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 63 ways as a sum of consecutive naturals, for example, 31696 + ... + 184785.

It is an arithmetic number, because the mean of its divisors is an integer number (532545720).

Almost surely, 2^16570538145 is an apocalyptic number.

16570538145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16570538145 is an abundant number, since it is smaller than the sum of its proper divisors (17512387935).

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

16570538145 is an frugal number, since it uses more digits than its factorization.

16570538145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216514 (or 216496 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 16570538145 in words is "sixteen billion, five hundred seventy million, five hundred thirty-eight thousand, one hundred forty-five".