99789961123 has 8 divisors (see below), whose sum is σ = 105058897920. Its totient is φ = 94522707720.

The previous prime is 99789961099. The next prime is 99789961127. The reversal of 99789961123 is 32116998799.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99789961123 is a prime.

It is a super-2 number, since 2×99789961123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99789961127) 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, 298243 + ... + 537148.

It is an arithmetic number, because the mean of its divisors is an integer number (13132362240).

Almost surely, 2^99789961123 is an apocalyptic number.

99789961123 is a deficient number, since it is larger than the sum of its proper divisors (5268936797).

99789961123 is a wasteful number, since it uses less digits than its factorization.

99789961123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841697.

The product of its digits is 13226976, while the sum is 64.

The spelling of 99789961123 in words is "ninety-nine billion, seven hundred eighty-nine million, nine hundred sixty-one thousand, one hundred twenty-three".