74159706229609 has 135 divisors (see below), whose sum is σ = 103055961873669. Its totient is φ = 53298244359360.

The previous prime is 74159706229601. The next prime is 74159706229621. The reversal of 74159706229609 is 90692260795147.

The square root of 74159706229609 is 8611603.

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

It can be written as a sum of positive squares in 4 ways, for example, as 5688582755625 + 68471123473984 = 2385075^2 + 8274728^2 .

It is not a de Polignac number, because 74159706229609 - 2³ = 74159706229601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74159706229601) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 60341501607 + ... + 60341502835.

Almost surely, 2^{74159706229609} is an apocalyptic number.

74159706229609 is the 8611603-rd square number.

74159706229609 is the 4305802-nd centered octagonal number.

It is an amenable number.

74159706229609 is a deficient number, since it is larger than the sum of its proper divisors (28896255644060).

74159706229609 is an frugal number, since it uses more digits than its factorization.

74159706229609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534 (or 1260 counting only the distinct ones).

The product of its (nonzero) digits is 102876480, while the sum is 67.

The spelling of 74159706229609 in words is "seventy-four trillion, one hundred fifty-nine billion, seven hundred six million, two hundred twenty-nine thousand, six hundred nine".