11277521904 has 80 divisors (see below), whose sum is σ = 31818499200. Its totient is φ = 3413518080.

The previous prime is 11277521891. The next prime is 11277521911. The reversal of 11277521904 is 40912577211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467122 + ... + 490670.

It is an arithmetic number, because the mean of its divisors is an integer number (397731240).

Almost surely, 2^11277521904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11277521904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15909249600).

11277521904 is an abundant number, since it is smaller than the sum of its proper divisors (20540977296).

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

11277521904 is a wasteful number, since it uses less digits than its factorization.

11277521904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24478 (or 24472 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The spelling of 11277521904 in words is "eleven billion, two hundred seventy-seven million, five hundred twenty-one thousand, nine hundred four".