11238521280 has 896 divisors, whose sum is σ = 46349107200. Its totient is φ = 2248114176.

The previous prime is 11238521251. The next prime is 11238521311. The reversal of 11238521280 is 8212583211.

It is a super-2 number, since 2×11238521280² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 126275476 + ... + 126275564.

Almost surely, 2^11238521280 is an apocalyptic number.

11238521280 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 11238521280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23174553600).

11238521280 is an abundant number, since it is smaller than the sum of its proper divisors (35110585920).

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

11238521280 is a wasteful number, since it uses less digits than its factorization.

11238521280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The spelling of 11238521280 in words is "eleven billion, two hundred thirty-eight million, five hundred twenty-one thousand, two hundred eighty".