100538081281 has 8 divisors (see below), whose sum is σ = 113459904000. Its totient is φ = 88246591440.

The previous prime is 100538081213. The next prime is 100538081291. The reversal of 100538081281 is 182180835001.

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 100538081281 - 2¹⁷ = 100537950209 is a prime.

It is a super-2 number, since 2×100538081281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100538081281.

It is not an unprimeable number, because it can be changed into a prime (100538081201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157582881 + ... + 157583518.

It is an arithmetic number, because the mean of its divisors is an integer number (14182488000).

Almost surely, 2^100538081281 is an apocalyptic number.

100538081281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100538081281 is a deficient number, since it is larger than the sum of its proper divisors (12921822719).

100538081281 is a wasteful number, since it uses less digits than its factorization.

100538081281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315166439.

The product of its (nonzero) digits is 15360, while the sum is 37.

The spelling of 100538081281 in words is "one hundred billion, five hundred thirty-eight million, eighty-one thousand, two hundred eighty-one".