1645566334332 has 48 divisors (see below), whose sum is σ = 3949762521600. Its totient is φ = 532904391040.

The previous prime is 1645566334331. The next prime is 1645566334343. The reversal of 1645566334332 is 2334336655461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645566334331) 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, 6879582 + ... + 7114757.

It is an arithmetic number, because the mean of its divisors is an integer number (82286719200).

Almost surely, 2^{1645566334332} is an apocalyptic number.

1645566334332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1645566334332 is an abundant number, since it is smaller than the sum of its proper divisors (2304196187268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1645566334332 is a wasteful number, since it uses less digits than its factorization.

1645566334332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13994626 (or 13994624 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 51.

The spelling of 1645566334332 in words is "one trillion, six hundred forty-five billion, five hundred sixty-six million, three hundred thirty-four thousand, three hundred thirty-two".