11612155016 has 128 divisors (see below), whose sum is σ = 28079308800. Its totient is φ = 4371045120.

The previous prime is 11612155001. The next prime is 11612155043. The reversal of 11612155016 is 61055121611.

It is a super-2 number, since 2×11612155016² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11612155016.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2284670 + ... + 2289746.

It is an arithmetic number, because the mean of its divisors is an integer number (219369600).

Almost surely, 2^11612155016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11612155016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14039654400).

11612155016 is an abundant number, since it is smaller than the sum of its proper divisors (16467153784).

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

11612155016 is a wasteful number, since it uses less digits than its factorization.

11612155016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5227 (or 5223 counting only the distinct ones).

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

Adding to 11612155016 its reverse (61055121611), we get a palindrome (72667276627).

The spelling of 11612155016 in words is "eleven billion, six hundred twelve million, one hundred fifty-five thousand, sixteen".