100643215608 has 128 divisors (see below), whose sum is σ = 301182873600. Its totient is φ = 30955478400.

The previous prime is 100643215597. The next prime is 100643215637. The reversal of 100643215608 is 806512346001.

It is a happy number.

100643215608 is a `hidden beast` number, since 1 + 0 + 0 + 6 + 4 + 32 + 15 + 608 = 666.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10190913 + ... + 10200783.

It is an arithmetic number, because the mean of its divisors is an integer number (2352991200).

Almost surely, 2^100643215608 is an apocalyptic number.

100643215608 is a gapful number since it is divisible by the number (18) 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 100643215608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150591436800).

100643215608 is an abundant number, since it is smaller than the sum of its proper divisors (200539657992).

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

100643215608 is a wasteful number, since it uses less digits than its factorization.

100643215608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13530 (or 13520 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 100643215608 in words is "one hundred billion, six hundred forty-three million, two hundred fifteen thousand, six hundred eight".