11901922508 has 12 divisors (see below), whose sum is σ = 23803845072. Its totient is φ = 5100823920.

The previous prime is 11901922469. The next prime is 11901922553. The reversal of 11901922508 is 80522910911.

It is a happy number.

11901922508 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

11901922508 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 212534303 + ... + 212534358.

It is an arithmetic number, because the mean of its divisors is an integer number (1983653756).

Almost surely, 2^11901922508 is an apocalyptic number.

It is an amenable number.

11901922508 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11901922508 is a wasteful number, since it uses less digits than its factorization.

11901922508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425068672 (or 425068670 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 38.

The spelling of 11901922508 in words is "eleven billion, nine hundred one million, nine hundred twenty-two thousand, five hundred eight".