11967923520 has 168 divisors, whose sum is σ = 47045416704. Its totient is φ = 2735520768.

The previous prime is 11967923507. The next prime is 11967923521. The reversal of 11967923520 is 2532976911.

It is a happy number.

11967923520 is a `hidden beast` number, since 11 + 96 + 7 + 9 + 23 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11967923521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 276664 + ... + 316983.

Almost surely, 2^11967923520 is an apocalyptic number.

11967923520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11967923520 is an abundant number, since it is smaller than the sum of its proper divisors (35077493184).

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

11967923520 is a wasteful number, since it uses less digits than its factorization.

11967923520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593677 (or 593664 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 11967923520 in words is "eleven billion, nine hundred sixty-seven million, nine hundred twenty-three thousand, five hundred twenty".