531426951982 has 16 divisors (see below), whose sum is σ = 840646227600. Its totient is φ = 251263244160.

The previous prime is 531426951971. The next prime is 531426951983. The reversal of 531426951982 is 289159624135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531426951983) 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 7 ways as a sum of consecutive naturals, for example, 12904507 + ... + 12945622.

It is an arithmetic number, because the mean of its divisors is an integer number (52540389225).

Almost surely, 2^531426951982 is an apocalyptic number.

531426951982 is a deficient number, since it is larger than the sum of its proper divisors (309219275618).

531426951982 is a wasteful number, since it uses less digits than its factorization.

531426951982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25850691.

The product of its digits is 4665600, while the sum is 55.

The spelling of 531426951982 in words is "five hundred thirty-one billion, four hundred twenty-six million, nine hundred fifty-one thousand, nine hundred eighty-two".