99875502181 has 8 divisors (see below), whose sum is σ = 122923695104. Its totient is φ = 79022375280.

The previous prime is 99875502173. The next prime is 99875502203. The reversal of 99875502181 is 18120557899.

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 99875502181 - 2³ = 99875502173 is a prime.

It is a super-2 number, since 2×99875502181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99875502131) 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, 548766405 + ... + 548766586.

It is an arithmetic number, because the mean of its divisors is an integer number (15365461888).

Almost surely, 2^99875502181 is an apocalyptic number.

99875502181 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

99875502181 is the 182461-st hex number.

It is an amenable number.

99875502181 is a deficient number, since it is larger than the sum of its proper divisors (23048192923).

99875502181 is a wasteful number, since it uses less digits than its factorization.

99875502181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097533011.

The product of its (nonzero) digits is 1814400, while the sum is 55.

The spelling of 99875502181 in words is "ninety-nine billion, eight hundred seventy-five million, five hundred two thousand, one hundred eighty-one".