745256114909 has 4 divisors (see below), whose sum is σ = 770954601660. Its totient is φ = 719557628160.

The previous prime is 745256114903. The next prime is 745256114923. The reversal of 745256114909 is 909411652547.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 361655498884 + 383600616025 = 601378^2 + 619355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745256114909 is a prime.

It is a super-2 number, since 2×745256114909² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745256114903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12849243332 + ... + 12849243389.

It is an arithmetic number, because the mean of its divisors is an integer number (192738650415).

Almost surely, 2^745256114909 is an apocalyptic number.

It is an amenable number.

745256114909 is a deficient number, since it is larger than the sum of its proper divisors (25698486751).

745256114909 is a wasteful number, since it uses less digits than its factorization.

745256114909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25698486750.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 745256114909 in words is "seven hundred forty-five billion, two hundred fifty-six million, one hundred fourteen thousand, nine hundred nine".