11515161652512 has 96 divisors (see below), whose sum is σ = 34594210627200. Its totient is φ = 3285405646848.

The previous prime is 11515161652427. The next prime is 11515161652517. The reversal of 11515161652512 is 21525616151511.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (11515161652517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11607937 + ... + 12560832.

It is an arithmetic number, because the mean of its divisors is an integer number (360356360700).

Almost surely, 2^{11515161652512} is an apocalyptic number.

11515161652512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11515161652512 is an abundant number, since it is smaller than the sum of its proper divisors (23079048974688).

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

11515161652512 is a wasteful number, since it uses less digits than its factorization.

11515161652512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24169498 (or 24169490 counting only the distinct ones).

The product of its digits is 90000, while the sum is 42.

The spelling of 11515161652512 in words is "eleven trillion, five hundred fifteen billion, one hundred sixty-one million, six hundred fifty-two thousand, five hundred twelve".