16616365620344 has 96 divisors (see below), whose sum is σ = 37261436693760. Its totient is φ = 6921463046400.

The previous prime is 16616365620343. The next prime is 16616365620347. The reversal of 16616365620344 is 44302656361661.

It is a super-2 number, since 2×16616365620344² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16616365620343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13039529 + ... + 14256999.

It is an arithmetic number, because the mean of its divisors is an integer number (388139965560).

Almost surely, 2^{16616365620344} is an apocalyptic number.

16616365620344 is a gapful number since it is divisible by the number (14) 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 16616365620344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18630718346880).

16616365620344 is an abundant number, since it is smaller than the sum of its proper divisors (20645071073416).

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

16616365620344 is a wasteful number, since it uses less digits than its factorization.

16616365620344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218469 (or 1218458 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 53.

The spelling of 16616365620344 in words is "sixteen trillion, six hundred sixteen billion, three hundred sixty-five million, six hundred twenty thousand, three hundred forty-four".