4527791681 has 16 divisors (see below), whose sum is σ = 5278285824. Its totient is φ = 3803953104.

The previous prime is 4527791641. The next prime is 4527791711. The reversal of 4527791681 is 1861977254.

It is a happy number.

It is not a de Polignac number, because 4527791681 - 2⁶ = 4527791617 is a prime.

It is a super-2 number, since 2×4527791681² = 41001795013065611522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4527791621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43106 + ... + 104468.

It is an arithmetic number, because the mean of its divisors is an integer number (329892864).

Almost surely, 2^4527791681 is an apocalyptic number.

It is an amenable number.

4527791681 is a deficient number, since it is larger than the sum of its proper divisors (750494143).

4527791681 is a wasteful number, since it uses less digits than its factorization.

4527791681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61580.

The product of its digits is 846720, while the sum is 50.

The square root of 4527791681 is about 67288.8674373406. The cubic root of 4527791681 is about 1654.3553963231.

The spelling of 4527791681 in words is "four billion, five hundred twenty-seven million, seven hundred ninety-one thousand, six hundred eighty-one".