11901235650 has 48 divisors (see below), whose sum is σ = 29680020000. Its totient is φ = 3155925760.

The previous prime is 11901235609. The next prime is 11901235651. The reversal of 11901235650 is 5653210911.

11901235650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11901235651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194775 + ... + 248474.

It is an arithmetic number, because the mean of its divisors is an integer number (618333750).

Almost surely, 2^11901235650 is an apocalyptic number.

11901235650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11901235650 is an abundant number, since it is smaller than the sum of its proper divisors (17778784350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11901235650 is a wasteful number, since it uses less digits than its factorization.

11901235650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443443 (or 443438 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The spelling of 11901235650 in words is "eleven billion, nine hundred one million, two hundred thirty-five thousand, six hundred fifty".