4156356221 has 8 divisors (see below), whose sum is σ = 4257258720. Its totient is φ = 4055646672.

The previous prime is 4156356209. The next prime is 4156356227. The reversal of 4156356221 is 1226536514.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4156356221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4156356227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4151 + ... + 91268.

It is an arithmetic number, because the mean of its divisors is an integer number (532157340).

Almost surely, 2^4156356221 is an apocalyptic number.

It is an amenable number.

4156356221 is a deficient number, since it is larger than the sum of its proper divisors (100902499).

4156356221 is a wasteful number, since it uses less digits than its factorization.

4156356221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96475.

The product of its digits is 43200, while the sum is 35.

The square root of 4156356221 is about 64469.8086006155. The cubic root of 4156356221 is about 1607.8205945989.

The spelling of 4156356221 in words is "four billion, one hundred fifty-six million, three hundred fifty-six thousand, two hundred twenty-one".