11955207398 has 48 divisors (see below), whose sum is σ = 20911413600. Its totient is φ = 5098021632.

The previous prime is 11955207391. The next prime is 11955207431. The reversal of 11955207398 is 89370255911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11955207391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 261128 + ... + 303476.

It is an arithmetic number, because the mean of its divisors is an integer number (435654450).

Almost surely, 2^11955207398 is an apocalyptic number.

11955207398 is a deficient number, since it is larger than the sum of its proper divisors (8956206202).

11955207398 is a wasteful number, since it uses less digits than its factorization.

11955207398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42429 (or 42410 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 50.

The spelling of 11955207398 in words is "eleven billion, nine hundred fifty-five million, two hundred seven thousand, three hundred ninety-eight".