99551244586369 has 9 divisors (see below), whose sum is σ = 103102718261673. Its totient is φ = 96118163677872.

The previous prime is 99551244586363. The next prime is 99551244586379. The reversal of 99551244586369 is 96368544215599.

The square root of 99551244586369 is 9977537.

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 28109666441025 + 71441578145344 = 5301855^2 + 8452312^2 .

It is not a de Polignac number, because 99551244586369 - 2³ = 99551244586361 is a prime.

It is a super-2 number, since 2×99551244586369² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99551244586295 and 99551244586304.

It is not an unprimeable number, because it can be changed into a prime (99551244586361) 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, 289176547 + ... + 289520599.

Almost surely, 2^{99551244586369} is an apocalyptic number.

99551244586369 is the 9977537-th square number.

99551244586369 is the 4988769-th centered octagonal number.

It is an amenable number.

99551244586369 is a deficient number, since it is larger than the sum of its proper divisors (3551473675304).

99551244586369 is an frugal number, since it uses more digits than its factorization.

99551244586369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688164 (or 344082 counting only the distinct ones).

The product of its digits is 2519424000, while the sum is 76.

The spelling of 99551244586369 in words is "ninety-nine trillion, five hundred fifty-one billion, two hundred forty-four million, five hundred eighty-six thousand, three hundred sixty-nine".