100918574545 has 4 divisors (see below), whose sum is σ = 121102289460. Its totient is φ = 80734859632.

The previous prime is 100918574539. The next prime is 100918574551. The reversal of 100918574545 is 545475819001.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (100918574539) and next prime (100918574551).

It can be written as a sum of positive squares in 2 ways, for example, as 34445875216 + 66472699329 = 185596^2 + 257823^2 .

It is a cyclic number.

It is not a de Polignac number, because 100918574545 - 2¹⁹ = 100918050257 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10091857450 + ... + 10091857459.

It is an arithmetic number, because the mean of its divisors is an integer number (30275572365).

Almost surely, 2^100918574545 is an apocalyptic number.

It is an amenable number.

100918574545 is a deficient number, since it is larger than the sum of its proper divisors (20183714915).

100918574545 is an equidigital number, since it uses as much as digits as its factorization.

100918574545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20183714914.

The product of its (nonzero) digits is 1008000, while the sum is 49.

The spelling of 100918574545 in words is "one hundred billion, nine hundred eighteen million, five hundred seventy-four thousand, five hundred forty-five".