4121664556 has 24 divisors (see below), whose sum is σ = 7465958640. Its totient is φ = 1988616000.

The previous prime is 4121664553. The next prime is 4121664571. The reversal of 4121664556 is 6554661214.

It is not an unprimeable number, because it can be changed into a prime (4121664553) 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, 211171 + ... + 229861.

It is an arithmetic number, because the mean of its divisors is an integer number (311081610).

Almost surely, 2^4121664556 is an apocalyptic number.

It is an amenable number.

4121664556 is a deficient number, since it is larger than the sum of its proper divisors (3344294084).

4121664556 is a wasteful number, since it uses less digits than its factorization.

4121664556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20625 (or 20623 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 4121664556 is about 64200.1912458211. The cubic root of 4121664556 is about 1603.3347837445.

The spelling of 4121664556 in words is "four billion, one hundred twenty-one million, six hundred sixty-four thousand, five hundred fifty-six".