4056213656 has 32 divisors (see below), whose sum is σ = 8437435200. Its totient is φ = 1812481440.

The previous prime is 4056213619. The next prime is 4056213659. The reversal of 4056213656 is 6563126504.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4056213659) 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, 385430 + ... + 395813.

It is an arithmetic number, because the mean of its divisors is an integer number (263669850).

Almost surely, 2^4056213656 is an apocalyptic number.

It is an amenable number.

4056213656 is an abundant number, since it is smaller than the sum of its proper divisors (4381221544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4056213656 is a wasteful number, since it uses less digits than its factorization.

4056213656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781319 (or 781315 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 4056213656 is about 63688.4106882877. The cubic root of 4056213656 is about 1594.8026217762.

It can be divided in two parts, 4056 and 213656, that added together give a palindrome (217712).

The spelling of 4056213656 in words is "four billion, fifty-six million, two hundred thirteen thousand, six hundred fifty-six".