531949133872 has 40 divisors (see below), whose sum is σ = 1110376854944. Its totient is φ = 245416656384.

The previous prime is 531949133801. The next prime is 531949133873. The reversal of 531949133872 is 278331949135.

It is not an unprimeable number, because it can be changed into a prime (531949133873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9748 + ... + 1031500.

Almost surely, 2^531949133872 is an apocalyptic number.

531949133872 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

531949133872 is an abundant number, since it is smaller than the sum of its proper divisors (578427721072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531949133872 is a wasteful number, since it uses less digits than its factorization.

531949133872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024277 (or 1024271 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 55.

The spelling of 531949133872 in words is "five hundred thirty-one billion, nine hundred forty-nine million, one hundred thirty-three thousand, eight hundred seventy-two".