7445985123 has 4 divisors (see below), whose sum is σ = 9927980168. Its totient is φ = 4963990080.

The previous prime is 7445985089. The next prime is 7445985167. The reversal of 7445985123 is 3215895447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3215895447 = 3 ⋅1071965149.

It is not a de Polignac number, because 7445985123 - 2¹⁷ = 7445854051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7445985223) 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, 1240997518 + ... + 1240997523.

It is an arithmetic number, because the mean of its divisors is an integer number (2481995042).

Almost surely, 2^7445985123 is an apocalyptic number.

7445985123 is a deficient number, since it is larger than the sum of its proper divisors (2481995045).

7445985123 is a wasteful number, since it uses less digits than its factorization.

7445985123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481995044.

The product of its digits is 1209600, while the sum is 48.

The square root of 7445985123 is about 86290.1218158834. The cubic root of 7445985123 is about 1952.7233587733.

The spelling of 7445985123 in words is "seven billion, four hundred forty-five million, nine hundred eighty-five thousand, one hundred twenty-three".