100530000000 has 384 divisors, whose sum is σ = 361929737520. Its totient is φ = 26784000000.

The previous prime is 100529999963. The next prime is 100530000017. The reversal of 100530000000 is 35001.

It can be written as a sum of positive squares in 8 ways, for example, as 100529580096 + 419904 = 317064^2 + 648^2 .

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89999442 + ... + 90000558.

Almost surely, 2^100530000000 is an apocalyptic number.

100530000000 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 100530000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180964868760).

100530000000 is an abundant number, since it is smaller than the sum of its proper divisors (261399737520).

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

100530000000 is an frugal number, since it uses more digits than its factorization.

100530000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1127 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 9.

Adding to 100530000000 its reverse (35001), we get a palindrome (100530035001).

The spelling of 100530000000 in words is "one hundred billion, five hundred thirty million", and thus it is an aban number.