3942063806281 has 16 divisors (see below), whose sum is σ = 3981316669200. Its totient is φ = 3902987612160.

The previous prime is 3942063806257. The next prime is 3942063806309. The reversal of 3942063806281 is 1826083602493.

It can be written as a sum of positive squares in 8 ways, for example, as 151317110025 + 3790746696256 = 388995^2 + 1946984^2 .

It is a cyclic number.

It is not a de Polignac number, because 3942063806281 - 2⁵ = 3942063806249 is a prime.

It is a super-2 number, since 2×3942063806281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3942063836281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265970851 + ... + 265985671.

It is an arithmetic number, because the mean of its divisors is an integer number (248832291825).

Almost surely, 2^{3942063806281} is an apocalyptic number.

It is an amenable number.

3942063806281 is a deficient number, since it is larger than the sum of its proper divisors (39252862919).

3942063806281 is a wasteful number, since it uses less digits than its factorization.

3942063806281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20604.

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 3942063806281 in words is "three trillion, nine hundred forty-two billion, sixty-three million, eight hundred six thousand, two hundred eighty-one".