745321380105 has 64 divisors (see below), whose sum is σ = 1246790880000. Its totient is φ = 379710643200.

The previous prime is 745321380079. The next prime is 745321380149. The reversal of 745321380105 is 501083123547.

It is a happy number.

It is not a de Polignac number, because 745321380105 - 2⁷ = 745321379977 is a prime.

It is a super-2 number, since 2×745321380105² (a number of 25 digits) contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 65852907 + ... + 65864223.

It is an arithmetic number, because the mean of its divisors is an integer number (19481107500).

Almost surely, 2^745321380105 is an apocalyptic number.

It is an amenable number.

745321380105 is a deficient number, since it is larger than the sum of its proper divisors (501469499895).

745321380105 is a wasteful number, since it uses less digits than its factorization.

745321380105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12954.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 745321380105 in words is "seven hundred forty-five billion, three hundred twenty-one million, three hundred eighty thousand, one hundred five".