100545445621 has 16 divisors (see below), whose sum is σ = 106211520000. Its totient is φ = 94917393648.

The previous prime is 100545445603. The next prime is 100545445669. The reversal of 100545445621 is 126544545001.

It is a cyclic number.

It is not a de Polignac number, because 100545445621 - 2⁹ = 100545445109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100545440621) 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, 6467760 + ... + 6483286.

It is an arithmetic number, because the mean of its divisors is an integer number (6638220000).

Almost surely, 2^100545445621 is an apocalyptic number.

It is an amenable number.

100545445621 is a deficient number, since it is larger than the sum of its proper divisors (5666074379).

100545445621 is a wasteful number, since it uses less digits than its factorization.

100545445621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16728.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 100545445621 in words is "one hundred billion, five hundred forty-five million, four hundred forty-five thousand, six hundred twenty-one".