100391518227 has 64 divisors (see below), whose sum is σ = 181371294720. Its totient is φ = 47697984000.

The previous prime is 100391518163. The next prime is 100391518231. The reversal of 100391518227 is 722815193001.

It is a happy number.

It is not a de Polignac number, because 100391518227 - 2⁶ = 100391518163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (100391518247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 173977 + ... + 480677.

It is an arithmetic number, because the mean of its divisors is an integer number (2833926480).

Almost surely, 2^100391518227 is an apocalyptic number.

100391518227 is a deficient number, since it is larger than the sum of its proper divisors (80979776493).

100391518227 is a wasteful number, since it uses less digits than its factorization.

100391518227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306844.

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 100391518227 in words is "one hundred billion, three hundred ninety-one million, five hundred eighteen thousand, two hundred twenty-seven".