745550885331 has 16 divisors (see below), whose sum is σ = 1262308377600. Its totient is φ = 426029077224.

The previous prime is 745550885323. The next prime is 745550885357. The reversal of 745550885331 is 133588055547.

745550885331 is a `hidden beast` number, since 7 + 4 + 5 + 550 + 8 + 8 + 53 + 31 = 666.

It is not a de Polignac number, because 745550885331 - 2³ = 745550885323 is a prime.

It is a super-2 number, since 2×745550885331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (745550885381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1972356651 + ... + 1972357028.

It is an arithmetic number, because the mean of its divisors is an integer number (78894273600).

Almost surely, 2^745550885331 is an apocalyptic number.

745550885331 is a deficient number, since it is larger than the sum of its proper divisors (516757492269).

745550885331 is a wasteful number, since it uses less digits than its factorization.

745550885331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944713695 (or 3944713689 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 54.

The spelling of 745550885331 in words is "seven hundred forty-five billion, five hundred fifty million, eight hundred eighty-five thousand, three hundred thirty-one".