531697652677 has 4 divisors (see below), whose sum is σ = 559681739680. Its totient is φ = 503713565676.

The previous prime is 531697652663. The next prime is 531697652683. The reversal of 531697652677 is 776256796135.

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, and also an emirpimes, since its reverse is a distinct semiprime: 776256796135 = 5 ⋅155251359227.

It is a cyclic number.

It is not a de Polignac number, because 531697652677 - 2¹¹ = 531697650629 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 (531697655677) 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, 13992043473 + ... + 13992043510.

It is an arithmetic number, because the mean of its divisors is an integer number (139920434920).

Almost surely, 2^531697652677 is an apocalyptic number.

It is an amenable number.

531697652677 is a deficient number, since it is larger than the sum of its proper divisors (27984087003).

531697652677 is a wasteful number, since it uses less digits than its factorization.

531697652677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27984087002.

The product of its digits is 100018800, while the sum is 64.

The spelling of 531697652677 in words is "five hundred thirty-one billion, six hundred ninety-seven million, six hundred fifty-two thousand, six hundred seventy-seven".