431121641336644 has 12 divisors (see below), whose sum is σ = 754465344215184. Its totient is φ = 215560114418024.

The previous prime is 431121641336623. The next prime is 431121641336663. The reversal of 431121641336644 is 446633146121134.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175187902 + ... + 177631765.

It is an arithmetic number, because the mean of its divisors is an integer number (62872112017932).

Almost surely, 2^{431121641336644} is an apocalyptic number.

It is an amenable number.

431121641336644 is a deficient number, since it is larger than the sum of its proper divisors (323343702878540).

431121641336644 is a wasteful number, since it uses less digits than its factorization.

431121641336644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353125154 (or 353125152 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 49.

Adding to 431121641336644 its reverse (446633146121134), we get a palindrome (877754787457778).

The spelling of 431121641336644 in words is "four hundred thirty-one trillion, one hundred twenty-one billion, six hundred forty-one million, three hundred thirty-six thousand, six hundred forty-four".