1601680968016 has 40 divisors (see below), whose sum is σ = 3135595956584. Its totient is φ = 792496742400.

The previous prime is 1601680967923. The next prime is 1601680968071. The reversal of 1601680968016 is 6108690861061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 811253284416 + 790427683600 = 900696^2 + 889060^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 15314236 + ... + 15418468.

Almost surely, 2^{1601680968016} is an apocalyptic number.

1601680968016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1601680968016 is a deficient number, since it is larger than the sum of its proper divisors (1533914988568).

1601680968016 is a wasteful number, since it uses less digits than its factorization.

1601680968016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114239 (or 114233 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 1601680968016 in words is "one trillion, six hundred one billion, six hundred eighty million, nine hundred sixty-eight thousand, sixteen".