977556655779 has 8 divisors (see below), whose sum is σ = 1421900590272. Its totient is φ = 592458579240.

The previous prime is 977556655769. The next prime is 977556655799.

977556655779 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 977556655779 - 2¹⁶ = 977556590243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (977556655709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14811464449 + ... + 14811464514.

It is an arithmetic number, because the mean of its divisors is an integer number (177737573784).

Almost surely, 2^977556655779 is an apocalyptic number.

977556655779 is a deficient number, since it is larger than the sum of its proper divisors (444343934493).

977556655779 is a wasteful number, since it uses less digits than its factorization.

977556655779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29622928977.

The product of its digits is 4375822500, while the sum is 78.

The spelling of 977556655779 in words is "nine hundred seventy-seven billion, five hundred fifty-six million, six hundred fifty-five thousand, seven hundred seventy-nine".