11323977280 has 224 divisors, whose sum is σ = 34530377472. Its totient is φ = 3433881600.

The previous prime is 11323977221. The next prime is 11323977293. The reversal of 11323977280 is 8277932311.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×11323977280² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 905470 + ... + 917890.

Almost surely, 2^11323977280 is an apocalyptic number.

11323977280 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 11323977280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17265188736).

11323977280 is an abundant number, since it is smaller than the sum of its proper divisors (23206400192).

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

11323977280 is a wasteful number, since it uses less digits than its factorization.

11323977280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12493 (or 12483 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 11323977280 in words is "eleven billion, three hundred twenty-three million, nine hundred seventy-seven thousand, two hundred eighty".