11051921520 has 240 divisors, whose sum is σ = 39361364640. Its totient is φ = 2771214336.

The previous prime is 11051921479. The next prime is 11051921537. The reversal of 11051921520 is 2512915011.

11051921520 is a `hidden beast` number, since 1 + 1 + 0 + 51 + 92 + 1 + 520 = 666.

11051921520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×11051921520² (a number of 21 digits) contains 22 as substring.

It is a congruent 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 47 ways as a sum of consecutive naturals, for example, 1871212 + ... + 1877108.

It is an arithmetic number, because the mean of its divisors is an integer number (164005686).

Almost surely, 2^11051921520 is an apocalyptic number.

11051921520 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 11051921520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19680682320).

11051921520 is an abundant number, since it is smaller than the sum of its proper divisors (28309443120).

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

11051921520 is a wasteful number, since it uses less digits than its factorization.

11051921520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6072 (or 6063 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 11051921520 in words is "eleven billion, fifty-one million, nine hundred twenty-one thousand, five hundred twenty".