11662544021616 has 120 divisors (see below), whose sum is σ = 33176372421504. Its totient is φ = 3823510279680.

The previous prime is 11662544021599. The next prime is 11662544021647. The reversal of 11662544021616 is 61612044526611.

11662544021616 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 2 + 5 + 4 + 4 + 0 + 21 + 616 = 666.

It is a super-2 number, since 2×11662544021616² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148647550 + ... + 148725986.

Almost surely, 2^{11662544021616} is an apocalyptic number.

11662544021616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11662544021616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16588186210752).

11662544021616 is an abundant number, since it is smaller than the sum of its proper divisors (21513828399888).

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

11662544021616 is a wasteful number, since it uses less digits than its factorization.

11662544021616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95439 (or 95430 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 11662544021616 in words is "eleven trillion, six hundred sixty-two billion, five hundred forty-four million, twenty-one thousand, six hundred sixteen".