745571240287 has 4 divisors (see below), whose sum is σ = 745573595776. Its totient is φ = 745568884800.

The previous prime is 745571240237. The next prime is 745571240291. The reversal of 745571240287 is 782042175547.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 782042175547 = 907 ⋅862229521.

It is a cyclic number.

It is not a de Polignac number, because 745571240287 - 2⁷ = 745571240159 is a prime.

It is a super-3 number, since 3×745571240287³ (a number of 37 digits) contains 333 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 (745571240207) 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, 612543 + ... + 1366144.

It is an arithmetic number, because the mean of its divisors is an integer number (186393398944).

Almost surely, 2^745571240287 is an apocalyptic number.

745571240287 is a deficient number, since it is larger than the sum of its proper divisors (2355489).

745571240287 is a wasteful number, since it uses less digits than its factorization.

745571240287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355488.

The product of its (nonzero) digits is 4390400, while the sum is 52.

The spelling of 745571240287 in words is "seven hundred forty-five billion, five hundred seventy-one million, two hundred forty thousand, two hundred eighty-seven".