99273432261 has 4 divisors (see below), whose sum is σ = 132364576352. Its totient is φ = 66182288172.

The previous prime is 99273432257. The next prime is 99273432277. The reversal of 99273432261 is 16223437299.

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 not a de Polignac number, because 99273432261 - 2² = 99273432257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99273432261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99273432361) 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, 16545572041 + ... + 16545572046.

It is an arithmetic number, because the mean of its divisors is an integer number (33091144088).

Almost surely, 2^99273432261 is an apocalyptic number.

It is an amenable number.

99273432261 is a deficient number, since it is larger than the sum of its proper divisors (33091144091).

99273432261 is a wasteful number, since it uses less digits than its factorization.

99273432261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33091144090.

The product of its digits is 979776, while the sum is 48.

The spelling of 99273432261 in words is "ninety-nine billion, two hundred seventy-three million, four hundred thirty-two thousand, two hundred sixty-one".