11731211620 has 24 divisors (see below), whose sum is σ = 24637604544. Its totient is φ = 4692092256.

The previous prime is 11731211599. The next prime is 11731211623. The reversal of 11731211620 is 2611213711.

11731211620 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 (11731211623) 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 7 ways as a sum of consecutive naturals, for example, 399067 + ... + 427453.

It is an arithmetic number, because the mean of its divisors is an integer number (1026566856).

Almost surely, 2^11731211620 is an apocalyptic number.

11731211620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11731211620 is an abundant number, since it is smaller than the sum of its proper divisors (12906392924).

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

11731211620 is a wasteful number, since it uses less digits than its factorization.

11731211620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49059 (or 49057 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The spelling of 11731211620 in words is "eleven billion, seven hundred thirty-one million, two hundred eleven thousand, six hundred twenty".