1623065808016 has 45 divisors (see below), whose sum is σ = 3189088996569. Its totient is φ = 800232559488.

The previous prime is 1623065808011. The next prime is 1623065808031. The reversal of 1623065808016 is 6108085603261.

The square root of 1623065808016 is 1273996.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 921331219600 + 701734588416 = 959860^2 + 837696^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1623065808011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 372004651 + ... + 372009013.

Almost surely, 2^{1623065808016} is an apocalyptic number.

1623065808016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1623065808016 is the 1273996-th square number.

It is an amenable number.

1623065808016 is a deficient number, since it is larger than the sum of its proper divisors (1566023188553).

1623065808016 is an frugal number, since it uses more digits than its factorization.

1623065808016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8880 (or 4438 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 1623065808016 in words is "one trillion, six hundred twenty-three billion, sixty-five million, eight hundred eight thousand, sixteen".