577461872181997 has 4 divisors (see below), whose sum is σ = 629958406016736. Its totient is φ = 524965338347260.

The previous prime is 577461872181983. The next prime is 577461872182033. The reversal of 577461872181997 is 799181278164775.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 577461872181997 - 2⁴⁷ = 436724383826669 is a prime.

It is a super-4 number, since 4×577461872181997⁴ (a number of 60 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 577461872181997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (577461872181097) 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 3 ways as a sum of consecutive naturals, for example, 26248266917353 + ... + 26248266917374.

It is an arithmetic number, because the mean of its divisors is an integer number (157489601504184).

Almost surely, 2^{577461872181997} is an apocalyptic number.

It is an amenable number.

577461872181997 is a deficient number, since it is larger than the sum of its proper divisors (52496533834739).

577461872181997 is a wasteful number, since it uses less digits than its factorization.

577461872181997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52496533834738.

The product of its digits is 2987228160, while the sum is 82.

The spelling of 577461872181997 in words is "five hundred seventy-seven trillion, four hundred sixty-one billion, eight hundred seventy-two million, one hundred eighty-one thousand, nine hundred ninety-seven".