100556215452 has 384 divisors, whose sum is σ = 332636129280. Its totient is φ = 25511915520.

The previous prime is 100556215439. The next prime is 100556215519. The reversal of 100556215452 is 254512655001.

100556215452 is a `hidden beast` number, since 1 + 0 + 0 + 55 + 62 + 1 + 545 + 2 = 666.

It is a super-2 number, since 2×100556215452² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 148531738 + ... + 148532414.

It is an arithmetic number, because the mean of its divisors is an integer number (866239920).

Almost surely, 2^100556215452 is an apocalyptic number.

100556215452 is a gapful number since it is divisible by the number (12) 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 100556215452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166318064640).

100556215452 is an abundant number, since it is smaller than the sum of its proper divisors (232079913828).

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

100556215452 is a wasteful number, since it uses less digits than its factorization.

100556215452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 100556215452 in words is "one hundred billion, five hundred fifty-six million, two hundred fifteen thousand, four hundred fifty-two".