7745424145 has 16 divisors (see below), whose sum is σ = 9856667088. Its totient is φ = 5822709760.

The previous prime is 7745424131. The next prime is 7745424199. The reversal of 7745424145 is 5414245477.

It can be written as a sum of positive squares in 8 ways, for example, as 22353984 + 7723070161 = 4728^2 + 87881^2 .

It is not a de Polignac number, because 7745424145 - 2⁷ = 7745424017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16594 + ... + 125563.

It is an arithmetic number, because the mean of its divisors is an integer number (616041693).

Almost surely, 2^7745424145 is an apocalyptic number.

It is an amenable number.

7745424145 is a deficient number, since it is larger than the sum of its proper divisors (2111242943).

7745424145 is a wasteful number, since it uses less digits than its factorization.

7745424145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142820.

The product of its digits is 627200, while the sum is 43.

The square root of 7745424145 is about 88008.0913609652. The cubic root of 7745424145 is about 1978.5562499225.

The spelling of 7745424145 in words is "seven billion, seven hundred forty-five million, four hundred twenty-four thousand, one hundred forty-five".