745269782985 has 128 divisors (see below), whose sum is σ = 1642411008000. Its totient is φ = 312224253696.

The previous prime is 745269782963. The next prime is 745269783019. The reversal of 745269782985 is 589287962547.

745269782985 is a `hidden beast` number, since 7 + 4 + 5 + 269 + 78 + 298 + 5 = 666.

It is not a de Polignac number, because 745269782985 - 2¹⁰ = 745269781961 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1489396 + ... + 1925834.

It is an arithmetic number, because the mean of its divisors is an integer number (12831336000).

Almost surely, 2^745269782985 is an apocalyptic number.

It is an amenable number.

745269782985 is an abundant number, since it is smaller than the sum of its proper divisors (897141225015).

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

745269782985 is a wasteful number, since it uses less digits than its factorization.

745269782985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436612 (or 436606 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 72.

The spelling of 745269782985 in words is "seven hundred forty-five billion, two hundred sixty-nine million, seven hundred eighty-two thousand, nine hundred eighty-five".