3864452721172 has 6 divisors (see below), whose sum is σ = 6762792262058. Its totient is φ = 1932226360584.

The previous prime is 3864452721161. The next prime is 3864452721193. The reversal of 3864452721172 is 2711272544683.

It can be written as a sum of positive squares in only one way, i.e., 3665095829136 + 199356892036 = 1914444^2 + 446494^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 483056590143 + ... + 483056590150.

Almost surely, 2^{3864452721172} is an apocalyptic number.

It is an amenable number.

3864452721172 is a deficient number, since it is larger than the sum of its proper divisors (2898339540886).

3864452721172 is a wasteful number, since it uses less digits than its factorization.

3864452721172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966113180297 (or 966113180295 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 52.

The spelling of 3864452721172 in words is "three trillion, eight hundred sixty-four billion, four hundred fifty-two million, seven hundred twenty-one thousand, one hundred seventy-two".