745517241220445 has 16 divisors (see below), whose sum is σ = 897811534743552. Its totient is φ = 594286701954240.

The previous prime is 745517241220391. The next prime is 745517241220447. The reversal of 745517241220445 is 544022142715547.

It is not a de Polignac number, because 745517241220445 - 2¹⁴ = 745517241204061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745517241220447) 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, 34250084 + ... + 51614946.

It is an arithmetic number, because the mean of its divisors is an integer number (56113220921472).

Almost surely, 2^{745517241220445} is an apocalyptic number.

It is an amenable number.

745517241220445 is a deficient number, since it is larger than the sum of its proper divisors (152294293523107).

745517241220445 is a wasteful number, since it uses less digits than its factorization.

745517241220445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17395492.

The product of its (nonzero) digits is 12544000, while the sum is 53.

The spelling of 745517241220445 in words is "seven hundred forty-five trillion, five hundred seventeen billion, two hundred forty-one million, two hundred twenty thousand, four hundred forty-five".