11322987520 has 176 divisors, whose sum is σ = 29398981248. Its totient is φ = 4159733760.

The previous prime is 11322987499. The next prime is 11322987539. The reversal of 11322987520 is 2578922311.

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 20699887 + ... + 20700433.

Almost surely, 2^11322987520 is an apocalyptic number.

11322987520 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 11322987520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14699490624).

11322987520 is an abundant number, since it is smaller than the sum of its proper divisors (18075993728).

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

11322987520 is a wasteful number, since it uses less digits than its factorization.

11322987520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 11322987520 in words is "eleven billion, three hundred twenty-two million, nine hundred eighty-seven thousand, five hundred twenty".