376255407978665 has 4 divisors (see below), whose sum is σ = 451506489574404. Its totient is φ = 301004326382928.

The previous prime is 376255407978649. The next prime is 376255407978679. The reversal of 376255407978665 is 566879704552673.

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

It can be written as a sum of positive squares in 2 ways, for example, as 61494266381584 + 314761141597081 = 7841828^2 + 17741509^2 .

It is a cyclic number.

It is not a de Polignac number, because 376255407978665 - 2⁴ = 376255407978649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 376255407978665.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 37625540797862 + ... + 37625540797871.

It is an arithmetic number, because the mean of its divisors is an integer number (112876622393601).

Almost surely, 2^{376255407978665} is an apocalyptic number.

It is an amenable number.

376255407978665 is a deficient number, since it is larger than the sum of its proper divisors (75251081595739).

376255407978665 is an equidigital number, since it uses as much as digits as its factorization.

376255407978665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75251081595738.

The product of its (nonzero) digits is 16003008000, while the sum is 80.

The spelling of 376255407978665 in words is "three hundred seventy-six trillion, two hundred fifty-five billion, four hundred seven million, nine hundred seventy-eight thousand, six hundred sixty-five".