100489081680 has 640 divisors, whose sum is σ = 390748323840. Its totient is φ = 23566878720.

The previous prime is 100489081643. The next prime is 100489081691. The reversal of 100489081680 is 86180984001.

100489081680 is a `hidden beast` number, since 1 + 0 + 0 + 489 + 0 + 8 + 168 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 58321299 + ... + 58323021.

It is an arithmetic number, because the mean of its divisors is an integer number (610544256).

Almost surely, 2^100489081680 is an apocalyptic number.

100489081680 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 100489081680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195374161920).

100489081680 is an abundant number, since it is smaller than the sum of its proper divisors (290259242160).

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

100489081680 is a wasteful number, since it uses less digits than its factorization.

100489081680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 100489081680 in words is "one hundred billion, four hundred eighty-nine million, eighty-one thousand, six hundred eighty".