4121626664 has 8 divisors (see below), whose sum is σ = 7728050010. Its totient is φ = 2060813328.

The previous prime is 4121626637. The next prime is 4121626667. The reversal of 4121626664 is 4666261214.

It can be written as a sum of positive squares in only one way, i.e., 2396885764 + 1724740900 = 48958^2 + 41530^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×4121626664³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (4121626667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257601659 + ... + 257601674.

Almost surely, 2^4121626664 is an apocalyptic number.

It is an amenable number.

4121626664 is a deficient number, since it is larger than the sum of its proper divisors (3606423346).

4121626664 is a wasteful number, since it uses less digits than its factorization.

4121626664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515203339 (or 515203335 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 4121626664 is about 64199.8961369876. The cubic root of 4121626664 is about 1603.3298703779.

Adding to 4121626664 its reverse (4666261214), we get a palindrome (8787887878).

The spelling of 4121626664 in words is "four billion, one hundred twenty-one million, six hundred twenty-six thousand, six hundred sixty-four".