1977173452799 has 4 divisors (see below), whose sum is σ = 1977183281736. Its totient is φ = 1977163623864.

The previous prime is 1977173452789. The next prime is 1977173452817. The reversal of 1977173452799 is 9972543717791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1977173452799 - 2¹⁶ = 1977173387263 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 (1977173452789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4606289 + ... + 5017194.

It is an arithmetic number, because the mean of its divisors is an integer number (494295820434).

Almost surely, 2^{1977173452799} is an apocalyptic number.

1977173452799 is a deficient number, since it is larger than the sum of its proper divisors (9828937).

1977173452799 is an equidigital number, since it uses as much as digits as its factorization.

1977173452799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9828936.

The product of its digits is 210039480, while the sum is 71.

The spelling of 1977173452799 in words is "one trillion, nine hundred seventy-seven billion, one hundred seventy-three million, four hundred fifty-two thousand, seven hundred ninety-nine".