431241506435561 has 16 divisors (see below), whose sum is σ = 452712771463680. Its totient is φ = 410243234787840.

The previous prime is 431241506435557. The next prime is 431241506435567. The reversal of 431241506435561 is 165534605142134.

It is a cyclic number.

It is not a de Polignac number, because 431241506435561 - 2² = 431241506435557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431241506435567) 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, 50385305 + ... + 58319481.

It is an arithmetic number, because the mean of its divisors is an integer number (28294548216480).

Almost surely, 2^{431241506435561} is an apocalyptic number.

It is an amenable number.

431241506435561 is a deficient number, since it is larger than the sum of its proper divisors (21471265028119).

431241506435561 is a wasteful number, since it uses less digits than its factorization.

431241506435561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7963984.

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 431241506435561 in words is "four hundred thirty-one trillion, two hundred forty-one billion, five hundred six million, four hundred thirty-five thousand, five hundred sixty-one".