4527135781 has 4 divisors (see below), whose sum is σ = 5173869472. Its totient is φ = 3880402092.

The previous prime is 4527135773. The next prime is 4527135787. The reversal of 4527135781 is 1875317254.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1875317254 = 2 ⋅937658627.

It is not a de Polignac number, because 4527135781 - 2³ = 4527135773 is a prime.

It is a super-2 number, since 2×4527135781² = 40989916759220959922, which 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 (4527135787) 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, 323366835 + ... + 323366848.

It is an arithmetic number, because the mean of its divisors is an integer number (1293467368).

Almost surely, 2^4527135781 is an apocalyptic number.

It is an amenable number.

4527135781 is a deficient number, since it is larger than the sum of its proper divisors (646733691).

4527135781 is an equidigital number, since it uses as much as digits as its factorization.

4527135781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646733690.

The product of its digits is 235200, while the sum is 43.

The square root of 4527135781 is about 67283.9934977109. The cubic root of 4527135781 is about 1654.2755086588.

The spelling of 4527135781 in words is "four billion, five hundred twenty-seven million, one hundred thirty-five thousand, seven hundred eighty-one".