4511520423 has 10 divisors (see below), whose sum is σ = 6739431864. Its totient is φ = 3007680228.

The previous prime is 4511520421. The next prime is 4511520451. The reversal of 4511520423 is 3240251154.

4511520423 is a `hidden beast` number, since 451 + 1 + 5 + 204 + 2 + 3 = 666.

It is not a de Polignac number, because 4511520423 - 2¹ = 4511520421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4511520421) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 27848811 + ... + 27848972.

Almost surely, 2^4511520423 is an apocalyptic number.

4511520423 is a deficient number, since it is larger than the sum of its proper divisors (2227911441).

4511520423 is an equidigital number, since it uses as much as digits as its factorization.

4511520423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55697795 (or 55697786 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 4511520423 is about 67167.8526007792. The cubic root of 4511520423 is about 1652.3712978941.

Adding to 4511520423 its reverse (3240251154), we get a palindrome (7751771577).

The spelling of 4511520423 in words is "four billion, five hundred eleven million, five hundred twenty thousand, four hundred twenty-three".