39070661569 has 9 divisors (see below), whose sum is σ = 39352361187. Its totient is φ = 38790968424.

The previous prime is 39070661563. The next prime is 39070661579. The reversal of 39070661569 is 96516607093.

The square root of 39070661569 is 197663.

It is a perfect power (a square), and thus also a powerful number.

39070661569 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 only one way, i.e., 11452210225 + 27618451344 = 107015^2 + 166188^2 .

It is not a de Polignac number, because 39070661569 - 2⁹ = 39070661057 is a prime.

It is a super-2 number, since 2×39070661569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39070661563) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 31032462 + ... + 31033720.

Almost surely, 2^39070661569 is an apocalyptic number.

39070661569 is the 197663-rd square number.

39070661569 is the 98832-nd centered octagonal number.

It is an amenable number.

39070661569 is a deficient number, since it is larger than the sum of its proper divisors (281699618).

39070661569 is an frugal number, since it uses more digits than its factorization.

39070661569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832 (or 1416 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 52.

The spelling of 39070661569 in words is "thirty-nine billion, seventy million, six hundred sixty-one thousand, five hundred sixty-nine".