745243706535257 has 8 divisors (see below), whose sum is σ = 745479628168800. Its totient is φ = 745007791297824.

The previous prime is 745243706535233. The next prime is 745243706535323. The reversal of 745243706535257 is 752535607342547.

745243706535257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 745243706535257 - 2¹² = 745243706531161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 745243706535193 and 745243706535202.

It is not an unprimeable number, because it can be changed into a prime (745243706538257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237101594 + ... + 240224172.

It is an arithmetic number, because the mean of its divisors is an integer number (93184953521100).

Almost surely, 2^{745243706535257} is an apocalyptic number.

It is an amenable number.

745243706535257 is a deficient number, since it is larger than the sum of its proper divisors (235921633543).

745243706535257 is a wasteful number, since it uses less digits than its factorization.

745243706535257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198055.

The product of its (nonzero) digits is 740880000, while the sum is 65.

The spelling of 745243706535257 in words is "seven hundred forty-five trillion, two hundred forty-three billion, seven hundred six million, five hundred thirty-five thousand, two hundred fifty-seven".