100973956209 has 32 divisors (see below), whose sum is σ = 157171163136. Its totient is φ = 56460127680.

The previous prime is 100973956159. The next prime is 100973956217. The reversal of 100973956209 is 902659379001.

It is a happy number.

It is not a de Polignac number, because 100973956209 - 2⁹ = 100973955697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100973956219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7485579 + ... + 7499055.

It is an arithmetic number, because the mean of its divisors is an integer number (4911598848).

Almost surely, 2^100973956209 is an apocalyptic number.

It is an amenable number.

100973956209 is a deficient number, since it is larger than the sum of its proper divisors (56197206927).

100973956209 is a wasteful number, since it uses less digits than its factorization.

100973956209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21125.

The product of its (nonzero) digits is 918540, while the sum is 51.

The spelling of 100973956209 in words is "one hundred billion, nine hundred seventy-three million, nine hundred fifty-six thousand, two hundred nine".