100108667640 has 128 divisors (see below), whose sum is σ = 304215912000. Its totient is φ = 26351321088.

The previous prime is 100108667623. The next prime is 100108667647. The reversal of 100108667640 is 46766801001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100108667647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4516906 + ... + 4539014.

Almost surely, 2^100108667640 is an apocalyptic number.

100108667640 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 100108667640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152107956000).

100108667640 is an abundant number, since it is smaller than the sum of its proper divisors (204107244360).

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

100108667640 is a wasteful number, since it uses less digits than its factorization.

100108667640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22609 (or 22605 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 100108667640 in words is "one hundred billion, one hundred eight million, six hundred sixty-seven thousand, six hundred forty".