100391518226 has 4 divisors (see below), whose sum is σ = 150587277342. Its totient is φ = 50195759112.

The previous prime is 100391518163. The next prime is 100391518231. The reversal of 100391518226 is 622815193001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 622815193001 = 3433 ⋅181420097.

It can be written as a sum of positive squares in only one way, i.e., 84753765625 + 15637752601 = 291125^2 + 125051^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100391518226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25097879555 + ... + 25097879558.

Almost surely, 2^100391518226 is an apocalyptic number.

100391518226 is a deficient number, since it is larger than the sum of its proper divisors (50195759116).

100391518226 is an equidigital number, since it uses as much as digits as its factorization.

100391518226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50195759115.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 100391518226 in words is "one hundred billion, three hundred ninety-one million, five hundred eighteen thousand, two hundred twenty-six".