99194598641 has 4 divisors (see below), whose sum is σ = 99264112752. Its totient is φ = 99125084532.

The previous prime is 99194598637. The next prime is 99194598661. The reversal of 99194598641 is 14689549199.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99194598641 - 2² = 99194598637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99194598661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34754915 + ... + 34757768.

It is an arithmetic number, because the mean of its divisors is an integer number (24816028188).

Almost surely, 2^99194598641 is an apocalyptic number.

It is an amenable number.

99194598641 is a deficient number, since it is larger than the sum of its proper divisors (69514111).

99194598641 is a wasteful number, since it uses less digits than its factorization.

99194598641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69514110.

The product of its digits is 25194240, while the sum is 65.

The spelling of 99194598641 in words is "ninety-nine billion, one hundred ninety-four million, five hundred ninety-eight thousand, six hundred forty-one".