745122555243431 has 4 divisors (see below), whose sum is σ = 745125387283200. Its totient is φ = 745119723203664.

The previous prime is 745122555243373. The next prime is 745122555243491. The reversal of 745122555243431 is 134342555221547.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745122555243431 is a prime.

It is a super-2 number, since 2×745122555243431² (a number of 31 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 (745122555243491) 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, 1415625191 + ... + 1416151448.

It is an arithmetic number, because the mean of its divisors is an integer number (186281346820800).

Almost surely, 2^{745122555243431} is an apocalyptic number.

745122555243431 is a deficient number, since it is larger than the sum of its proper divisors (2832039769).

745122555243431 is a wasteful number, since it uses less digits than its factorization.

745122555243431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832039768.

The product of its digits is 20160000, while the sum is 53.

The spelling of 745122555243431 in words is "seven hundred forty-five trillion, one hundred twenty-two billion, five hundred fifty-five million, two hundred forty-three thousand, four hundred thirty-one".