1599994556672 has 144 divisors (see below), whose sum is σ = 3343280209920. Its totient is φ = 763601577984.

The previous prime is 1599994556663. The next prime is 1599994556689. The reversal of 1599994556672 is 2766554999951.

It is a Smith number, since the sum of its digits (77) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1599994556593 and 1599994556602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90146903 + ... + 90164649.

It is an arithmetic number, because the mean of its divisors is an integer number (23217223680).

Almost surely, 2^{1599994556672} 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 1599994556672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1671640104960).

1599994556672 is an abundant number, since it is smaller than the sum of its proper divisors (1743285653248).

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

1599994556672 is a wasteful number, since it uses less digits than its factorization.

1599994556672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17996 (or 17982 counting only the distinct ones).

The product of its digits is 1653372000, while the sum is 77.

The spelling of 1599994556672 in words is "one trillion, five hundred ninety-nine billion, nine hundred ninety-four million, five hundred fifty-six thousand, six hundred seventy-two".