3639227720976 has 225 divisors, whose sum is σ = 11120512770741. Its totient is φ = 1148817748608.

The previous prime is 3639227720923. The next prime is 3639227720983. The reversal of 3639227720976 is 6790277229363.

The square root of 3639227720976 is 1907676.

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

3639227720976 is a `hidden beast` number, since 3 + 6 + 3 + 92 + 277 + 209 + 76 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2287123880976 + 1352103840000 = 1512324^2 + 1162800^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1304848990 + ... + 1304851778.

Almost surely, 2^{3639227720976} is an apocalyptic number.

3639227720976 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

3639227720976 is the 1907676-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3639227720976

3639227720976 is an abundant number, since it is smaller than the sum of its proper divisors (7481285049765).

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

3639227720976 is an frugal number, since it uses more digits than its factorization.

3639227720976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5636 (or 2813 counting only the distinct ones).

The product of its (nonzero) digits is 72013536, while the sum is 63.

The spelling of 3639227720976 in words is "three trillion, six hundred thirty-nine billion, two hundred twenty-seven million, seven hundred twenty thousand, nine hundred seventy-six".