577913438161 has 4 divisors (see below), whose sum is σ = 577915721572. Its totient is φ = 577911154752.

The previous prime is 577913438143. The next prime is 577913438177. The reversal of 577913438161 is 161834319775.

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 357430601025 + 220482837136 = 597855^2 + 469556^2 .

It is a cyclic number.

It is not a de Polignac number, because 577913438161 - 2²¹ = 577911341009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (577913438191) 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, 706860 + ... + 1286653.

It is an arithmetic number, because the mean of its divisors is an integer number (144478930393).

Almost surely, 2^577913438161 is an apocalyptic number.

It is an amenable number.

577913438161 is a deficient number, since it is larger than the sum of its proper divisors (2283411).

577913438161 is a wasteful number, since it uses less digits than its factorization.

577913438161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283410.

The product of its digits is 3810240, while the sum is 55.

The spelling of 577913438161 in words is "five hundred seventy-seven billion, nine hundred thirteen million, four hundred thirty-eight thousand, one hundred sixty-one".