100545505404520 has 192 divisors, whose sum is σ = 259794780174720. Its totient is φ = 34929195840000.

The previous prime is 100545505404499. The next prime is 100545505404691. The reversal of 100545505404520 is 25404505545001.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89723670 + ... + 90837370.

It is an arithmetic number, because the mean of its divisors is an integer number (1353097813410).

Almost surely, 2^{100545505404520} is an apocalyptic number.

100545505404520 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 100545505404520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129897390087360).

100545505404520 is an abundant number, since it is smaller than the sum of its proper divisors (159249274770200).

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

100545505404520 is a wasteful number, since it uses less digits than its factorization.

100545505404520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114568 (or 1114553 counting only the distinct ones).

The product of its (nonzero) digits is 400000, while the sum is 40.

The spelling of 100545505404520 in words is "one hundred trillion, five hundred forty-five billion, five hundred five million, four hundred four thousand, five hundred twenty".