11954807109 has 24 divisors (see below), whose sum is σ = 20371533312. Its totient is φ = 6610952160.

The previous prime is 11954807107. The next prime is 11954807149. The reversal of 11954807109 is 90170845911.

It is a happy number.

11954807109 is a `hidden beast` number, since 11 + 95 + 480 + 71 + 0 + 9 = 666.

It is not a de Polignac number, because 11954807109 - 2¹ = 11954807107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11954807107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3058674 + ... + 3062579.

It is an arithmetic number, because the mean of its divisors is an integer number (848813888).

Almost surely, 2^11954807109 is an apocalyptic number.

It is an amenable number.

11954807109 is a deficient number, since it is larger than the sum of its proper divisors (8416726203).

11954807109 is a wasteful number, since it uses less digits than its factorization.

11954807109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6121297 (or 6121294 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 11954807109 in words is "eleven billion, nine hundred fifty-four million, eight hundred seven thousand, one hundred nine".