4156334021 has 16 divisors (see below), whose sum is σ = 4946746368. Its totient is φ = 3417120000.

The previous prime is 4156334009. The next prime is 4156334023. The reversal of 4156334021 is 1204336514.

It is not a de Polignac number, because 4156334021 - 2¹⁰ = 4156332997 is a prime.

It is a super-2 number, since 2×4156334021² = 34550224988244056882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4156334023) 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, 60230 + ... + 109271.

It is an arithmetic number, because the mean of its divisors is an integer number (309171648).

Almost surely, 2^4156334021 is an apocalyptic number.

It is an amenable number.

4156334021 is a deficient number, since it is larger than the sum of its proper divisors (790412347).

4156334021 is a wasteful number, since it uses less digits than its factorization.

4156334021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169652.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 4156334021 is about 64469.6364267707. The cubic root of 4156334021 is about 1607.8177320210.

The spelling of 4156334021 in words is "four billion, one hundred fifty-six million, three hundred thirty-four thousand, twenty-one".