1608977776880 has 20 divisors (see below), whose sum is σ = 3740873331432. Its totient is φ = 643591110720.

The previous prime is 1608977776829. The next prime is 1608977776883. The reversal of 1608977776880 is 886777798061.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1608977776798 and 1608977776807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608977776883) 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 3 ways as a sum of consecutive naturals, for example, 10056111026 + ... + 10056111185.

Almost surely, 2^{1608977776880} is an apocalyptic number.

1608977776880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1608977776880 is an abundant number, since it is smaller than the sum of its proper divisors (2131895554552).

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

1608977776880 is a wasteful number, since it uses less digits than its factorization.

1608977776880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20112222224 (or 20112222218 counting only the distinct ones).

The product of its (nonzero) digits is 398297088, while the sum is 74.

The spelling of 1608977776880 in words is "one trillion, six hundred eight billion, nine hundred seventy-seven million, seven hundred seventy-six thousand, eight hundred eighty".