11515521011152 has 20 divisors (see below), whose sum is σ = 22311375060960. Its totient is φ = 5757746801888.

The previous prime is 11515521011149. The next prime is 11515521011173. The reversal of 11515521011152 is 25111012551511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11334363 + ... + 12308485.

It is an arithmetic number, because the mean of its divisors is an integer number (1115568753048).

Almost surely, 2^{11515521011152} is an apocalyptic number.

It is an amenable number.

11515521011152 is a deficient number, since it is larger than the sum of its proper divisors (10795854049808).

11515521011152 is an equidigital number, since it uses as much as digits as its factorization.

11515521011152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712970 (or 1712964 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 31.

Adding to 11515521011152 its reverse (25111012551511), we get a palindrome (36626533562663).

The spelling of 11515521011152 in words is "eleven trillion, five hundred fifteen billion, five hundred twenty-one million, eleven thousand, one hundred fifty-two".