3862435660821 has 16 divisors (see below), whose sum is σ = 5722196341120. Its totient is φ = 2574925860960.

The previous prime is 3862435660807. The next prime is 3862435660871. The reversal of 3862435660821 is 1280665342683.

3862435660821 is a `hidden beast` number, since 3 + 8 + 6 + 2 + 4 + 3 + 5 + 6 + 608 + 21 = 666.

It is not a de Polignac number, because 3862435660821 - 2⁶ = 3862435660757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3862435660871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1517481 + ... + 3166641.

It is an arithmetic number, because the mean of its divisors is an integer number (357637271320).

Almost surely, 2^{3862435660821} is an apocalyptic number.

It is an amenable number.

3862435660821 is a deficient number, since it is larger than the sum of its proper divisors (1859760680299).

3862435660821 is a wasteful number, since it uses less digits than its factorization.

3862435660821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735913 (or 1735907 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 54.

The spelling of 3862435660821 in words is "three trillion, eight hundred sixty-two billion, four hundred thirty-five million, six hundred sixty thousand, eight hundred twenty-one".