431441500545561 has 16 divisors (see below), whose sum is σ = 627731036299008. Its totient is φ = 261404796142800.

The previous prime is 431441500545553. The next prime is 431441500545611. The reversal of 431441500545561 is 165545005144134.

It is not a de Polignac number, because 431441500545561 - 2³ = 431441500545553 is a prime.

It is a super-2 number, since 2×431441500545561² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 431441500545561.

It is not an unprimeable number, because it can be changed into a prime (431441500545541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1872411991 + ... + 1872642396.

It is an arithmetic number, because the mean of its divisors is an integer number (39233189768688).

Almost surely, 2^{431441500545561} is an apocalyptic number.

It is an amenable number.

431441500545561 is a deficient number, since it is larger than the sum of its proper divisors (196289535753447).

431441500545561 is a wasteful number, since it uses less digits than its factorization.

431441500545561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745057892.

The product of its (nonzero) digits is 2880000, while the sum is 48.

Adding to 431441500545561 its reverse (165545005144134), we get a palindrome (596986505689695).

The spelling of 431441500545561 in words is "four hundred thirty-one trillion, four hundred forty-one billion, five hundred million, five hundred forty-five thousand, five hundred sixty-one".