100445728601 has 4 divisors (see below), whose sum is σ = 101717193600. Its totient is φ = 99174263604.

The previous prime is 100445728571. The next prime is 100445728633. The reversal of 100445728601 is 106827544001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106827544001 = 59 ⋅1810636339.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100445728601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100445728001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635732381 + ... + 635732538.

It is an arithmetic number, because the mean of its divisors is an integer number (25429298400).

Almost surely, 2^100445728601 is an apocalyptic number.

It is an amenable number.

100445728601 is a deficient number, since it is larger than the sum of its proper divisors (1271464999).

100445728601 is an equidigital number, since it uses as much as digits as its factorization.

100445728601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271464998.

The product of its (nonzero) digits is 53760, while the sum is 38.

The spelling of 100445728601 in words is "one hundred billion, four hundred forty-five million, seven hundred twenty-eight thousand, six hundred one".