1645716711928 has 32 divisors (see below), whose sum is σ = 3160924527600. Its totient is φ = 803007108352.

The previous prime is 1645716711923. The next prime is 1645716712027. The reversal of 1645716711928 is 8291176175461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645716711923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12660475 + ... + 12789802.

Almost surely, 2^{1645716711928} is an apocalyptic number.

It is an amenable number.

1645716711928 is a deficient number, since it is larger than the sum of its proper divisors (1515207815672).

1645716711928 is a wasteful number, since it uses less digits than its factorization.

1645716711928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25450479 (or 25450475 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 58.

The spelling of 1645716711928 in words is "one trillion, six hundred forty-five billion, seven hundred sixteen million, seven hundred eleven thousand, nine hundred twenty-eight".