3963423943578 has 16 divisors (see below), whose sum is σ = 8647470422496. Its totient is φ = 1201037558640.

The previous prime is 3963423943571. The next prime is 3963423943579. The reversal of 3963423943578 is 8753493243693.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 60051877933 = 3963423943578 / (3 + 9 + 6 + 3 + 4 + 2 + 3 + 9 + 4 + 3 + 5 + 7 + 8).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3963423943571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30025938901 + ... + 30025939032.

It is an arithmetic number, because the mean of its divisors is an integer number (540466901406).

Almost surely, 2^{3963423943578} is an apocalyptic number.

3963423943578 is an abundant number, since it is smaller than the sum of its proper divisors (4684046478918).

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

3963423943578 is a wasteful number, since it uses less digits than its factorization.

3963423943578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60051877949.

The product of its digits is 352719360, while the sum is 66.

The spelling of 3963423943578 in words is "three trillion, nine hundred sixty-three billion, four hundred twenty-three million, nine hundred forty-three thousand, five hundred seventy-eight".