11515151516 has 24 divisors (see below), whose sum is σ = 22003712640. Its totient is φ = 5229340400.

The previous prime is 11515151489. The next prime is 11515151519. The reversal of 11515151516 is 61515151511.

11515151516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11515151519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71936 + ... + 167943.

It is an arithmetic number, because the mean of its divisors is an integer number (916821360).

Almost surely, 2^11515151516 is an apocalyptic number.

It is an amenable number.

11515151516 is a deficient number, since it is larger than the sum of its proper divisors (10488561124).

11515151516 is a wasteful number, since it uses less digits than its factorization.

11515151516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240985 (or 240983 counting only the distinct ones).

The product of its digits is 3750, while the sum is 32.

The spelling of 11515151516 in words is "eleven billion, five hundred fifteen million, one hundred fifty-one thousand, five hundred sixteen".