99901836123 has 8 divisors (see below), whose sum is σ = 133871808000. Its totient is φ = 66266544168.

The previous prime is 99901836121. The next prime is 99901836169. The reversal of 99901836123 is 32163810999.

It is a happy number.

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

It is not a de Polignac number, because 99901836123 - 2¹ = 99901836121 is a prime.

It is a super-2 number, since 2×99901836123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99901836121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83669283 + ... + 83670476.

It is an arithmetic number, because the mean of its divisors is an integer number (16733976000).

Almost surely, 2^99901836123 is an apocalyptic number.

99901836123 is a deficient number, since it is larger than the sum of its proper divisors (33969971877).

99901836123 is a wasteful number, since it uses less digits than its factorization.

99901836123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167339961.

The product of its (nonzero) digits is 629856, while the sum is 51.

The spelling of 99901836123 in words is "ninety-nine billion, nine hundred one million, eight hundred thirty-six thousand, one hundred twenty-three".