99998260007569 has 81 divisors (see below), whose sum is σ = 130052348331633. Its totient is φ = 76607333510400.

The previous prime is 99998260007567. The next prime is 99998260007717. The reversal of 99998260007569 is 96570006289999.

The square root of 99998260007569 is 9999913.

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 57663717757569 + 42334542250000 = 7593663^2 + 6506500^2 .

It is not a de Polignac number, because 99998260007569 - 2¹ = 99998260007567 is a prime.

It is a super-2 number, since 2×99998260007569² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99998260007567) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 46969590297 + ... + 46969592425.

Almost surely, 2^{99998260007569} is an apocalyptic number.

99998260007569 is the 9999913-rd square number.

99998260007569 is the 4999957-th centered octagonal number.

It is an amenable number.

99998260007569 is a deficient number, since it is larger than the sum of its proper divisors (30054088324064).

99998260007569 is an frugal number, since it uses more digits than its factorization.

99998260007569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416 (or 2208 counting only the distinct ones).

The product of its (nonzero) digits is 1190427840, while the sum is 79.

The spelling of 99998260007569 in words is "ninety-nine trillion, nine hundred ninety-eight billion, two hundred sixty million, seven thousand, five hundred sixty-nine".