99432378241 has 27 divisors (see below), whose sum is σ = 117035323587. Its totient is φ = 84230682480.

The previous prime is 99432378239. The next prime is 99432378247. The reversal of 99432378241 is 14287323499.

The square root of 99432378241 is 315329.

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

It can be written as a sum of positive squares in only one way, i.e., 471801841 + 98960576400 = 21721^2 + 314580^2 .

It is not a de Polignac number, because 99432378241 - 2¹ = 99432378239 is a prime.

It is a super-2 number, since 2×99432378241² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99432378247) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 236181211 + ... + 236181631.

Almost surely, 2^99432378241 is an apocalyptic number.

99432378241 is the 315329-th square number.

99432378241 is the 157665-th centered octagonal number.

It is an amenable number.

99432378241 is a deficient number, since it is larger than the sum of its proper divisors (17602945346).

99432378241 is an frugal number, since it uses more digits than its factorization.

99432378241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 535 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 52.

The spelling of 99432378241 in words is "ninety-nine billion, four hundred thirty-two million, three hundred seventy-eight thousand, two hundred forty-one".