3963342899985 has 32 divisors (see below), whose sum is σ = 7267002949632. Its totient is φ = 1806877056960.

The previous prime is 3963342899981. The next prime is 3963342899987. The reversal of 3963342899985 is 5899982433693.

It is not a de Polignac number, because 3963342899985 - 2² = 3963342899981 is a prime.

It is a super-4 number, since 4×3963342899985⁴ (a number of 51 digits) contains 4444 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3963342899985.

It is not an unprimeable number, because it can be changed into a prime (3963342899981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51386701 + ... + 51463770.

It is an arithmetic number, because the mean of its divisors is an integer number (227093842176).

Almost surely, 2^{3963342899985} is an apocalyptic number.

3963342899985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3963342899985 is a deficient number, since it is larger than the sum of its proper divisors (3303660049647).

3963342899985 is a wasteful number, since it uses less digits than its factorization.

3963342899985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102850853.

The product of its digits is 2720977920, while the sum is 78.

The spelling of 3963342899985 in words is "three trillion, nine hundred sixty-three billion, three hundred forty-two million, eight hundred ninety-nine thousand, nine hundred eighty-five".