3988355443792 has 20 divisors (see below), whose sum is σ = 7727666069716. Its totient is φ = 1994119038720.

The previous prime is 3988355443777. The next prime is 3988355443799. The reversal of 3988355443792 is 2973445538893.

It can be written as a sum of positive squares in 2 ways, for example, as 1584788925456 + 2403566518336 = 1258884^2 + 1550344^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3988355443799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3104373 + ... + 4196884.

Almost surely, 2^{3988355443792} is an apocalyptic number.

It is an amenable number.

3988355443792 is a deficient number, since it is larger than the sum of its proper divisors (3739310625924).

3988355443792 is a wasteful number, since it uses less digits than its factorization.

3988355443792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7335406 (or 7335400 counting only the distinct ones).

The product of its digits is 783820800, while the sum is 70.

The spelling of 3988355443792 in words is "three trillion, nine hundred eighty-eight billion, three hundred fifty-five million, four hundred forty-three thousand, seven hundred ninety-two".