100551000000 has 588 divisors, whose sum is σ = 366846710552. Its totient is φ = 24288000000.

The previous prime is 100550999981. The next prime is 100551000023. The reversal of 100551000000 is 155001.

It is a super-2 number, since 2×100551000000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 100551000000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 362999862 + ... + 363000138.

Almost surely, 2^100551000000 is an apocalyptic number.

100551000000 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 100551000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183423355276).

100551000000 is an abundant number, since it is smaller than the sum of its proper divisors (266295710552).

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

100551000000 is an frugal number, since it uses more digits than its factorization.

100551000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 12.

Adding to 100551000000 its reverse (155001), we get a palindrome (100551155001).

The spelling of 100551000000 in words is "one hundred billion, five hundred fifty-one million", and thus it is an aban number.