531780272677 has 4 divisors (see below), whose sum is σ = 531979967520. Its totient is φ = 531580577836.

The previous prime is 531780272669. The next prime is 531780272693. The reversal of 531780272677 is 776272087135.

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 531780272677 - 2³ = 531780272669 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 (531780272377) 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, 99843427 + ... + 99848752.

It is an arithmetic number, because the mean of its divisors is an integer number (132994991880).

Almost surely, 2^531780272677 is an apocalyptic number.

It is an amenable number.

531780272677 is a deficient number, since it is larger than the sum of its proper divisors (199694843).

531780272677 is a wasteful number, since it uses less digits than its factorization.

531780272677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199694842.

The product of its (nonzero) digits is 6914880, while the sum is 55.

The spelling of 531780272677 in words is "five hundred thirty-one billion, seven hundred eighty million, two hundred seventy-two thousand, six hundred seventy-seven".