11521066115 has 8 divisors (see below), whose sum is σ = 14888762448. Its totient is φ = 8507864160.

The previous prime is 11521066111. The next prime is 11521066121. The reversal of 11521066115 is 51166012511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11521066115 - 2² = 11521066111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11521066111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88623521 + ... + 88623650.

It is an arithmetic number, because the mean of its divisors is an integer number (1861095306).

Almost surely, 2^11521066115 is an apocalyptic number.

11521066115 is a deficient number, since it is larger than the sum of its proper divisors (3367696333).

11521066115 is a wasteful number, since it uses less digits than its factorization.

11521066115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177247189.

The product of its (nonzero) digits is 1800, while the sum is 29.

Adding to 11521066115 its reverse (51166012511), we get a palindrome (62687078626).

The spelling of 11521066115 in words is "eleven billion, five hundred twenty-one million, sixty-six thousand, one hundred fifteen".