2077177766401 has 4 divisors (see below), whose sum is σ = 2077318007892. Its totient is φ = 2077037524912.

The previous prime is 2077177766371. The next prime is 2077177766413. The reversal of 2077177766401 is 1046677717702.

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 213199210225 + 1863978556176 = 461735^2 + 1365276^2 .

It is a cyclic number.

It is not a de Polignac number, because 2077177766401 - 2⁹ = 2077177765889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2077177166401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70098526 + ... + 70128151.

It is an arithmetic number, because the mean of its divisors is an integer number (519329501973).

Almost surely, 2^{2077177766401} is an apocalyptic number.

It is an amenable number.

2077177766401 is a deficient number, since it is larger than the sum of its proper divisors (140241491).

2077177766401 is a wasteful number, since it uses less digits than its factorization.

2077177766401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140241490.

The product of its (nonzero) digits is 4840416, while the sum is 55.

The spelling of 2077177766401 in words is "two trillion, seventy-seven billion, one hundred seventy-seven million, seven hundred sixty-six thousand, four hundred one".