16545715901065 has 48 divisors (see below), whose sum is σ = 22766276745648. Its totient is φ = 11498660978688.

The previous prime is 16545715901063. The next prime is 16545715901087. The reversal of 16545715901065 is 56010951754561.

It can be written as a sum of positive squares in 24 ways, for example, as 11590947084304 + 4954768816761 = 3404548^2 + 2225931^2 .

It is not a de Polignac number, because 16545715901065 - 2¹ = 16545715901063 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16545715900997 and 16545715901015.

It is not an unprimeable number, because it can be changed into a prime (16545715901063) 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 47 ways as a sum of consecutive naturals, for example, 194071627 + ... + 194156863.

It is an arithmetic number, because the mean of its divisors is an integer number (474297432201).

Almost surely, 2^{16545715901065} is an apocalyptic number.

It is an amenable number.

16545715901065 is a deficient number, since it is larger than the sum of its proper divisors (6220560844583).

16545715901065 is a wasteful number, since it uses less digits than its factorization.

16545715901065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98798 (or 98785 counting only the distinct ones).

The product of its (nonzero) digits is 5670000, while the sum is 55.

The spelling of 16545715901065 in words is "sixteen trillion, five hundred forty-five billion, seven hundred fifteen million, nine hundred one thousand, sixty-five".