1600977617768 has 8 divisors (see below), whose sum is σ = 3001833033330. Its totient is φ = 800488808880.

The previous prime is 1600977617747. The next prime is 1600977617783. The reversal of 1600977617768 is 8677167790061.

It can be written as a sum of positive squares in only one way, i.e., 1353867219364 + 247110398404 = 1163558^2 + 497102^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100061101103 + ... + 100061101118.

Almost surely, 2^{1600977617768} is an apocalyptic number.

It is an amenable number.

1600977617768 is a deficient number, since it is larger than the sum of its proper divisors (1400855415562).

1600977617768 is a wasteful number, since it uses less digits than its factorization.

1600977617768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200122202227 (or 200122202223 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 65.

The spelling of 1600977617768 in words is "one trillion, six hundred billion, nine hundred seventy-seven million, six hundred seventeen thousand, seven hundred sixty-eight".