745740436321 has 16 divisors (see below), whose sum is σ = 751617554688. Its totient is φ = 739891353600.

The previous prime is 745740436307. The next prime is 745740436349. The reversal of 745740436321 is 123634047547.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 745740436321 - 2⁹ = 745740435809 is a prime.

It is a super-2 number, since 2×745740436321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745740436351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91374481 + ... + 91382641.

It is an arithmetic number, because the mean of its divisors is an integer number (46976097168).

Almost surely, 2^745740436321 is an apocalyptic number.

It is an amenable number.

745740436321 is a deficient number, since it is larger than the sum of its proper divisors (5877118367).

745740436321 is a wasteful number, since it uses less digits than its factorization.

745740436321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9792.

The product of its (nonzero) digits is 1693440, while the sum is 46.

The spelling of 745740436321 in words is "seven hundred forty-five billion, seven hundred forty million, four hundred thirty-six thousand, three hundred twenty-one".