100421180545 has 16 divisors (see below), whose sum is σ = 138110636160. Its totient is φ = 68665158144.

The previous prime is 100421180543. The next prime is 100421180593. The reversal of 100421180545 is 545081124001.

It is a cyclic number.

It is not a de Polignac number, because 100421180545 - 2¹ = 100421180543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100421180543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4051635 + ... + 4076344.

It is an arithmetic number, because the mean of its divisors is an integer number (8631914760).

Almost surely, 2^100421180545 is an apocalyptic number.

It is an amenable number.

100421180545 is a deficient number, since it is larger than the sum of its proper divisors (37689455615).

100421180545 is an equidigital number, since it uses as much as digits as its factorization.

100421180545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8128344.

The product of its (nonzero) digits is 6400, while the sum is 31.

The spelling of 100421180545 in words is "one hundred billion, four hundred twenty-one million, one hundred eighty thousand, five hundred forty-five".