431664211056503 has 2 divisors, whose sum is σ = 431664211056504. Its totient is φ = 431664211056502.

The previous prime is 431664211056497. The next prime is 431664211056541. The reversal of 431664211056503 is 305650112466134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431664211056503 - 2⁶ = 431664211056439 is a prime.

It is a super-2 number, since 2×431664211056503² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431664211056553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215832105528251 + 215832105528252.

It is an arithmetic number, because the mean of its divisors is an integer number (215832105528252).

Almost surely, 2^{431664211056503} is an apocalyptic number.

431664211056503 is a deficient number, since it is larger than the sum of its proper divisors (1).

431664211056503 is an equidigital number, since it uses as much as digits as its factorization.

431664211056503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 431664211056503 in words is "four hundred thirty-one trillion, six hundred sixty-four billion, two hundred eleven million, fifty-six thousand, five hundred three".