1977384959999 has 8 divisors (see below), whose sum is σ = 1996615695360. Its totient is φ = 1958154856056.

The previous prime is 1977384959929. The next prime is 1977384960007. The reversal of 1977384959999 is 9999594837791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1977384959999 - 2²⁰ = 1977383911423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977384959929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8358074 + ... + 8591400.

It is an arithmetic number, because the mean of its divisors is an integer number (249576961920).

Almost surely, 2^{1977384959999} is an apocalyptic number.

1977384959999 is a deficient number, since it is larger than the sum of its proper divisors (19230735361).

1977384959999 is a wasteful number, since it uses less digits than its factorization.

1977384959999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315709.

The product of its digits is 12499492320, while the sum is 89.

The spelling of 1977384959999 in words is "one trillion, nine hundred seventy-seven billion, three hundred eighty-four million, nine hundred fifty-nine thousand, nine hundred ninety-nine".