99128648051 has 4 divisors (see below), whose sum is σ = 99349425000. Its totient is φ = 98907871104.

The previous prime is 99128648029. The next prime is 99128648053. The reversal of 99128648051 is 15084682199.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99128648051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99128647984 and 99128648002.

It is not an unprimeable number, because it can be changed into a prime (99128648053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110387801 + ... + 110388698.

It is an arithmetic number, because the mean of its divisors is an integer number (24837356250).

Almost surely, 2^99128648051 is an apocalyptic number.

99128648051 is a deficient number, since it is larger than the sum of its proper divisors (220776949).

99128648051 is a wasteful number, since it uses less digits than its factorization.

99128648051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220776948.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The spelling of 99128648051 in words is "ninety-nine billion, one hundred twenty-eight million, six hundred forty-eight thousand, fifty-one".