531288720478 has 8 divisors (see below), whose sum is σ = 831582345168. Its totient is φ = 254094605424.

The previous prime is 531288720439. The next prime is 531288720481. The reversal of 531288720478 is 874027882135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5774877351 + ... + 5774877442.

It is an arithmetic number, because the mean of its divisors is an integer number (103947793146).

Almost surely, 2^531288720478 is an apocalyptic number.

531288720478 is a deficient number, since it is larger than the sum of its proper divisors (300293624690).

531288720478 is a wasteful number, since it uses less digits than its factorization.

531288720478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11549754818.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 531288720478 in words is "five hundred thirty-one billion, two hundred eighty-eight million, seven hundred twenty thousand, four hundred seventy-eight".