3942621164685 has 32 divisors (see below), whose sum is σ = 7377024061440. Its totient is φ = 1760426192448.

The previous prime is 3942621164623. The next prime is 3942621164719. The reversal of 3942621164685 is 5864611262493.

It is a happy number.

It is not a de Polignac number, because 3942621164685 - 2¹⁸ = 3942620902541 is a prime.

It is a super-2 number, since 2×3942621164685² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 436609125 + ... + 436618154.

It is an arithmetic number, because the mean of its divisors is an integer number (230532001920).

Almost surely, 2^{3942621164685} is an apocalyptic number.

3942621164685 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3942621164685 is a deficient number, since it is larger than the sum of its proper divisors (3434402896755).

3942621164685 is a wasteful number, since it uses less digits than its factorization.

3942621164685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873227337.

The product of its digits is 14929920, while the sum is 57.

The spelling of 3942621164685 in words is "three trillion, nine hundred forty-two billion, six hundred twenty-one million, one hundred sixty-four thousand, six hundred eighty-five".