4136989213681 has 27 divisors (see below), whose sum is σ = 4356849546777. Its totient is φ = 3927900262440.

The previous prime is 4136989213673. The next prime is 4136989213739. The reversal of 4136989213681 is 1863129896314.

The square root of 4136989213681 is 2033959.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 4136989213681 - 2³ = 4136989213673 is a prime.

It is a super-2 number, since 2×4136989213681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4136989253681) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8935181656 + ... + 8935182118.

Almost surely, 2^{4136989213681} is an apocalyptic number.

4136989213681 is the 2033959-th square number.

4136989213681 is the 1016980-th centered octagonal number.

It is an amenable number.

4136989213681 is a deficient number, since it is larger than the sum of its proper divisors (219860333096).

4136989213681 is an frugal number, since it uses more digits than its factorization.

4136989213681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354 (or 677 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 61.

The spelling of 4136989213681 in words is "four trillion, one hundred thirty-six billion, nine hundred eighty-nine million, two hundred thirteen thousand, six hundred eighty-one".