531788060644 has 81 divisors (see below), whose sum is σ = 989895329059. Its totient is φ = 249953616880.

The previous prime is 531788060641. The next prime is 531788060647. The reversal of 531788060644 is 446060887135.

The square root of 531788060644 is 729238.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (531788060641) and next prime (531788060647).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531788060591 and 531788060600.

It is not an unprimeable number, because it can be changed into a prime (531788060641) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2784230589 + ... + 2784230779.

Almost surely, 2^531788060644 is an apocalyptic number.

531788060644 is the 729238-th square number.

It is an amenable number.

531788060644 is a deficient number, since it is larger than the sum of its proper divisors (458107268415).

531788060644 is an equidigital number, since it uses as much as digits as its factorization.

531788060644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 531788060644 in words is "five hundred thirty-one billion, seven hundred eighty-eight million, sixty thousand, six hundred forty-four".