431626463056640 has 72 divisors (see below), whose sum is σ = 1036003221204000. Its totient is φ = 172296066318336.

The previous prime is 431626463056573. The next prime is 431626463056697. The reversal of 431626463056640 is 46650364626134.

It is a super-2 number, since 2×431626463056640² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

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, 345586265 + ... + 346832984.

Almost surely, 2^{431626463056640} is an apocalyptic number.

431626463056640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431626463056640 is an abundant number, since it is smaller than the sum of its proper divisors (604376758147360).

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

431626463056640 is an equidigital number, since it uses as much as digits as its factorization.

431626463056640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692419757 (or 692419743 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 56.

The spelling of 431626463056640 in words is "four hundred thirty-one trillion, six hundred twenty-six billion, four hundred sixty-three million, fifty-six thousand, six hundred forty".