100421745731780 has 48 divisors (see below), whose sum is σ = 230141952190080. Its totient is φ = 36503528294400.

The previous prime is 100421745731759. The next prime is 100421745731807. The reversal of 100421745731780 is 87137547124001.

100421745731780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83590685 + ... + 84783524.

It is an arithmetic number, because the mean of its divisors is an integer number (4794624003960).

Almost surely, 2^{100421745731780} is an apocalyptic number.

100421745731780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100421745731780 is an abundant number, since it is smaller than the sum of its proper divisors (129720206458300).

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

100421745731780 is a wasteful number, since it uses less digits than its factorization.

100421745731780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168376940 (or 168376938 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 50.

The spelling of 100421745731780 in words is "one hundred trillion, four hundred twenty-one billion, seven hundred forty-five million, seven hundred thirty-one thousand, seven hundred eighty".