745564465549 has 4 divisors (see below), whose sum is σ = 746296129440. Its totient is φ = 744832801660.

The previous prime is 745564465511. The next prime is 745564465559. The reversal of 745564465549 is 945564465547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 945564465547 = 13 ⋅72735728119.

It is a cyclic number.

It is not a de Polignac number, because 745564465549 - 2¹⁷ = 745564334477 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 (745564465559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365830417 + ... + 365832454.

It is an arithmetic number, because the mean of its divisors is an integer number (186574032360).

Almost surely, 2^745564465549 is an apocalyptic number.

It is an amenable number.

745564465549 is a deficient number, since it is larger than the sum of its proper divisors (731663891).

745564465549 is a wasteful number, since it uses less digits than its factorization.

745564465549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731663890.

The product of its digits is 362880000, while the sum is 64.

The spelling of 745564465549 in words is "seven hundred forty-five billion, five hundred sixty-four million, four hundred sixty-five thousand, five hundred forty-nine".