11501475072 has 72 divisors (see below), whose sum is σ = 30631743744. Its totient is φ = 3831189504.

The previous prime is 11501475061. The next prime is 11501475079. The reversal of 11501475072 is 27057410511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11501475079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1342033 + ... + 1350575.

Almost surely, 2^11501475072 is an apocalyptic number.

11501475072 is a gapful number since it is divisible by the number (12) 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 11501475072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15315871872).

11501475072 is an abundant number, since it is smaller than the sum of its proper divisors (19130268672).

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

11501475072 is an equidigital number, since it uses as much as digits as its factorization.

11501475072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10315 (or 10301 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 33.

Adding to 11501475072 its reverse (27057410511), we get a palindrome (38558885583).

The spelling of 11501475072 in words is "eleven billion, five hundred one million, four hundred seventy-five thousand, seventy-two".