431655538940 has 24 divisors (see below), whose sum is σ = 908434484160. Its totient is φ = 172289291328.

The previous prime is 431655538901. The next prime is 431655539023. The reversal of 431655538940 is 49835556134.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23298275 + ... + 23316794.

It is an arithmetic number, because the mean of its divisors is an integer number (37851436840).

Almost surely, 2^431655538940 is an apocalyptic number.

It is an amenable number.

431655538940 is an abundant number, since it is smaller than the sum of its proper divisors (476778945220).

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

431655538940 is a wasteful number, since it uses less digits than its factorization.

431655538940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46615541 (or 46615539 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 53.

The spelling of 431655538940 in words is "four hundred thirty-one billion, six hundred fifty-five million, five hundred thirty-eight thousand, nine hundred forty".