1045665264640 has 88 divisors (see below), whose sum is σ = 2561741436672. Its totient is φ = 409366732800.

The previous prime is 1045665264619. The next prime is 1045665264673. The reversal of 1045665264640 is 464625665401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1932036 + ... + 2413315.

It is an arithmetic number, because the mean of its divisors is an integer number (29110698144).

Almost surely, 2^{1045665264640} is an apocalyptic number.

1045665264640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1045665264640 is an abundant number, since it is smaller than the sum of its proper divisors (1516076172032).

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

1045665264640 is an equidigital number, since it uses as much as digits as its factorization.

1045665264640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345423 (or 4345405 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 1045665264640 in words is "one trillion, forty-five billion, six hundred sixty-five million, two hundred sixty-four thousand, six hundred forty".