431666456145 has 16 divisors (see below), whose sum is σ = 694172255040. Its totient is φ = 229053468224.

The previous prime is 431666456077. The next prime is 431666456233. The reversal of 431666456145 is 541654666134.

It is a cyclic number.

It is not a de Polignac number, because 431666456145 - 2²² = 431662261841 is a prime.

It is a super-2 number, since 2×431666456145² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73037055 + ... + 73042964.

It is an arithmetic number, because the mean of its divisors is an integer number (43385765940).

Almost surely, 2^431666456145 is an apocalyptic number.

It is an amenable number.

431666456145 is a deficient number, since it is larger than the sum of its proper divisors (262505798895).

431666456145 is a wasteful number, since it uses less digits than its factorization.

431666456145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146080224.

The product of its digits is 6220800, while the sum is 51.

The spelling of 431666456145 in words is "four hundred thirty-one billion, six hundred sixty-six million, four hundred fifty-six thousand, one hundred forty-five".