100553611920 has 160 divisors (see below), whose sum is σ = 321620664960. Its totient is φ = 25971732480.

The previous prime is 100553611903. The next prime is 100553611927. The reversal of 100553611920 is 29116355001.

It is a super-2 number, since 2×100553611920² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100553611927) 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 31 ways as a sum of consecutive naturals, for example, 1331002 + ... + 1404518.

It is an arithmetic number, because the mean of its divisors is an integer number (2010129156).

Almost surely, 2^100553611920 is an apocalyptic number.

100553611920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100553611920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160810332480).

100553611920 is an abundant number, since it is smaller than the sum of its proper divisors (221067053040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100553611920 is a wasteful number, since it uses less digits than its factorization.

100553611920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73713 (or 73707 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

Adding to 100553611920 its reverse (29116355001), we get a palindrome (129669966921).

The spelling of 100553611920 in words is "one hundred billion, five hundred fifty-three million, six hundred eleven thousand, nine hundred twenty".