16772245306505 has 8 divisors (see below), whose sum is σ = 21674901626952. Its totient is φ = 12385658072448.

The previous prime is 16772245306367. The next prime is 16772245306507. The reversal of 16772245306505 is 50560354227761.

16772245306505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2820884843401 + 13951360463104 = 1679549^2 + 3735152^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16772245306505 - 2¹⁴ = 16772245290121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16772245306507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129017271524 + ... + 129017271653.

It is an arithmetic number, because the mean of its divisors is an integer number (2709362703369).

Almost surely, 2^{16772245306505} is an apocalyptic number.

It is an amenable number.

16772245306505 is a deficient number, since it is larger than the sum of its proper divisors (4902656320447).

16772245306505 is a wasteful number, since it uses less digits than its factorization.

16772245306505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258034543195.

The product of its (nonzero) digits is 10584000, while the sum is 53.

The spelling of 16772245306505 in words is "sixteen trillion, seven hundred seventy-two billion, two hundred forty-five million, three hundred six thousand, five hundred five".