645141785374 has 16 divisors (see below), whose sum is σ = 972991039680. Its totient is φ = 320815624320.

The previous prime is 645141785347. The next prime is 645141785417. The reversal of 645141785374 is 473587141546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737559 + ... + 1354354.

It is an arithmetic number, because the mean of its divisors is an integer number (60811939980).

Almost surely, 2^645141785374 is an apocalyptic number.

645141785374 is a deficient number, since it is larger than the sum of its proper divisors (327849254306).

645141785374 is a wasteful number, since it uses less digits than its factorization.

645141785374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092755.

The product of its digits is 11289600, while the sum is 55.

The spelling of 645141785374 in words is "six hundred forty-five billion, one hundred forty-one million, seven hundred eighty-five thousand, three hundred seventy-four".