501001100109 has 12 divisors (see below), whose sum is σ = 724168390816. Its totient is φ = 333769901832.

The previous prime is 501001100077. The next prime is 501001100113. The reversal of 501001100109 is 901001100105.

It is not a de Polignac number, because 501001100109 - 2⁵ = 501001100077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 501001100091 and 501001100100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501001100179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19222219 + ... + 19248264.

Almost surely, 2^501001100109 is an apocalyptic number.

It is an amenable number.

501001100109 is a deficient number, since it is larger than the sum of its proper divisors (223167290707).

501001100109 is a wasteful number, since it uses less digits than its factorization.

501001100109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38471936 (or 38471933 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 18.

The spelling of 501001100109 in words is "five hundred one billion, one million, one hundred thousand, one hundred nine".