745407531249 has 8 divisors (see below), whose sum is σ = 996355205472. Its totient is φ = 495699105600.

The previous prime is 745407531181. The next prime is 745407531283. The reversal of 745407531249 is 942135704547.

It is a happy number.

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

It is not a de Polignac number, because 745407531249 - 2¹⁶ = 745407465713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745407533249) 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, 309810739 + ... + 309813144.

It is an arithmetic number, because the mean of its divisors is an integer number (124544400684).

Almost surely, 2^745407531249 is an apocalyptic number.

It is an amenable number.

745407531249 is a deficient number, since it is larger than the sum of its proper divisors (250947674223).

745407531249 is a wasteful number, since it uses less digits than its factorization.

745407531249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619624287.

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 745407531249 in words is "seven hundred forty-five billion, four hundred seven million, five hundred thirty-one thousand, two hundred forty-nine".