11571105720016 has 40 divisors (see below), whose sum is σ = 24092078365440. Its totient is φ = 5363954179584.

The previous prime is 11571105720011. The next prime is 11571105720019. The reversal of 11571105720016 is 61002750117511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11571105720011) 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, 317450656 + ... + 317487103.

It is an arithmetic number, because the mean of its divisors is an integer number (602301959136).

Almost surely, 2^{11571105720016} is an apocalyptic number.

11571105720016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11571105720016 is an abundant number, since it is smaller than the sum of its proper divisors (12520972645424).

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

11571105720016 is a wasteful number, since it uses less digits than its factorization.

11571105720016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634937851 (or 634937845 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 37.

Adding to 11571105720016 its reverse (61002750117511), we get a palindrome (72573855837527).

The spelling of 11571105720016 in words is "eleven trillion, five hundred seventy-one billion, one hundred five million, seven hundred twenty thousand, sixteen".