16770457729 has 2 divisors, whose sum is σ = 16770457730. Its totient is φ = 16770457728.

The previous prime is 16770457679. The next prime is 16770457741. The reversal of 16770457729 is 92775407761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10826818704 + 5943639025 = 104052^2 + 77095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16770457729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16770457729.

It is not a weakly prime, because it can be changed into another prime (16770452729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8385228864 + 8385228865.

It is an arithmetic number, because the mean of its divisors is an integer number (8385228865).

Almost surely, 2^16770457729 is an apocalyptic number.

It is an amenable number.

16770457729 is a deficient number, since it is larger than the sum of its proper divisors (1).

16770457729 is an equidigital number, since it uses as much as digits as its factorization.

16770457729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5186160, while the sum is 55.

The spelling of 16770457729 in words is "sixteen billion, seven hundred seventy million, four hundred fifty-seven thousand, seven hundred twenty-nine".