99427855321 has 8 divisors (see below), whose sum is σ = 102120171264. Its totient is φ = 96735806640.

The previous prime is 99427855297. The next prime is 99427855337. The reversal of 99427855321 is 12355872499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99427855321 - 2⁷ = 99427855193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99427855381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858366 + ... + 967288.

It is an arithmetic number, because the mean of its divisors is an integer number (12765021408).

Almost surely, 2^99427855321 is an apocalyptic number.

It is an amenable number.

99427855321 is a deficient number, since it is larger than the sum of its proper divisors (2692315943).

99427855321 is a wasteful number, since it uses less digits than its factorization.

99427855321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133631.

The product of its digits is 5443200, while the sum is 55.

The spelling of 99427855321 in words is "ninety-nine billion, four hundred twenty-seven million, eight hundred fifty-five thousand, three hundred twenty-one".