3991528143364 has 6 divisors (see below), whose sum is σ = 6985174250894. Its totient is φ = 1995764071680.

The previous prime is 3991528143347. The next prime is 3991528143371. The reversal of 3991528143364 is 4633418251993.

3991528143364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3711325190400 + 280202952964 = 1926480^2 + 529342^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3991528143299 and 3991528143308.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498941017917 + ... + 498941017924.

Almost surely, 2^{3991528143364} is an apocalyptic number.

It is an amenable number.

3991528143364 is a deficient number, since it is larger than the sum of its proper divisors (2993646107530).

3991528143364 is a wasteful number, since it uses less digits than its factorization.

3991528143364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997882035845 (or 997882035843 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 58.

The spelling of 3991528143364 in words is "three trillion, nine hundred ninety-one billion, five hundred twenty-eight million, one hundred forty-three thousand, three hundred sixty-four".