1145566640445 has 64 divisors (see below), whose sum is σ = 1897062236160. Its totient is φ = 589690886400.

The previous prime is 1145566640443. The next prime is 1145566640489. The reversal of 1145566640445 is 5440466655411.

It is not a de Polignac number, because 1145566640445 - 2¹ = 1145566640443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145566640443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 345152496 + ... + 345155814.

It is an arithmetic number, because the mean of its divisors is an integer number (29641597440).

Almost surely, 2^{1145566640445} is an apocalyptic number.

1145566640445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145566640445 is a deficient number, since it is larger than the sum of its proper divisors (751495595715).

1145566640445 is a wasteful number, since it uses less digits than its factorization.

1145566640445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5106.

The product of its (nonzero) digits is 6912000, while the sum is 51.

The spelling of 1145566640445 in words is "one trillion, one hundred forty-five billion, five hundred sixty-six million, six hundred forty thousand, four hundred forty-five".