4075566921 has 40 divisors (see below), whose sum is σ = 6195486528. Its totient is φ = 2669436000.

The previous prime is 4075566907. The next prime is 4075566973. The reversal of 4075566921 is 1296655704.

4075566921 is a `hidden beast` number, since 4 + 0 + 7 + 556 + 6 + 92 + 1 = 666.

It is not a de Polignac number, because 4075566921 - 2⁷ = 4075566793 is a prime.

It is a super-2 number, since 2×4075566921² = 33220491455098840482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4075562921) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1902511 + ... + 1904651.

Almost surely, 2^4075566921 is an apocalyptic number.

It is an amenable number.

4075566921 is a deficient number, since it is larger than the sum of its proper divisors (2119919607).

4075566921 is a wasteful number, since it uses less digits than its factorization.

4075566921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2555 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 4075566921 is about 63840.1669875636. The cubic root of 4075566921 is about 1597.3350064338.

The spelling of 4075566921 in words is "four billion, seventy-five million, five hundred sixty-six thousand, nine hundred twenty-one".