11950975520 has 192 divisors, whose sum is σ = 32926352256. Its totient is φ = 4050862080.

The previous prime is 11950975481. The next prime is 11950975549. The reversal of 11950975520 is 2557905911.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3199574 + ... + 3203306.

It is an arithmetic number, because the mean of its divisors is an integer number (171491418).

Almost surely, 2^11950975520 is an apocalyptic number.

11950975520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11950975520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16463176128).

11950975520 is an abundant number, since it is smaller than the sum of its proper divisors (20975376736).

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

11950975520 is a wasteful number, since it uses less digits than its factorization.

11950975520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883 (or 3875 counting only the distinct ones).

The product of its (nonzero) digits is 141750, while the sum is 44.

The spelling of 11950975520 in words is "eleven billion, nine hundred fifty million, nine hundred seventy-five thousand, five hundred twenty".