100520171553 has 8 divisors (see below), whose sum is σ = 134617323168. Its totient is φ = 66718233824.

The previous prime is 100520171527. The next prime is 100520171603. The reversal of 100520171553 is 355171025001.

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 100520171553 - 2¹⁶ = 100520106017 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100520171553.

It is not an unprimeable number, because it can be changed into a prime (100520171503) 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 7 ways as a sum of consecutive naturals, for example, 73802676 + ... + 73804037.

It is an arithmetic number, because the mean of its divisors is an integer number (16827165396).

Almost surely, 2^100520171553 is an apocalyptic number.

It is an amenable number.

100520171553 is a deficient number, since it is larger than the sum of its proper divisors (34097151615).

100520171553 is a wasteful number, since it uses less digits than its factorization.

100520171553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147606943.

The product of its (nonzero) digits is 5250, while the sum is 30.

Adding to 100520171553 its reverse (355171025001), we get a palindrome (455691196554).

The spelling of 100520171553 in words is "one hundred billion, five hundred twenty million, one hundred seventy-one thousand, five hundred fifty-three".