11903355506 has 16 divisors (see below), whose sum is σ = 20408557824. Its totient is φ = 5100736704.

The previous prime is 11903355493. The next prime is 11903355509. The reversal of 11903355506 is 60555330911.

It is a self number, because there is not a number n which added to its sum of digits gives 11903355506.

It is not an unprimeable number, because it can be changed into a prime (11903355509) 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 7 ways as a sum of consecutive naturals, for example, 54551 + ... + 163653.

It is an arithmetic number, because the mean of its divisors is an integer number (1275534864).

Almost surely, 2^11903355506 is an apocalyptic number.

It is a pronic number, being equal to 109102×109103.

11903355506 is a deficient number, since it is larger than the sum of its proper divisors (8505202318).

11903355506 is a wasteful number, since it uses less digits than its factorization.

11903355506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116905.

The product of its (nonzero) digits is 60750, while the sum is 38.

The spelling of 11903355506 in words is "eleven billion, nine hundred three million, three hundred fifty-five thousand, five hundred six".