3862661086221 has 32 divisors (see below), whose sum is σ = 6250686024960. Its totient is φ = 2071233110016.

The previous prime is 3862661086189. The next prime is 3862661086231. The reversal of 3862661086221 is 1226801662683.

It is not a de Polignac number, because 3862661086221 - 2⁵ = 3862661086189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3862661086231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15932776 + ... + 16173393.

It is an arithmetic number, because the mean of its divisors is an integer number (195333938280).

Almost surely, 2^{3862661086221} is an apocalyptic number.

It is an amenable number.

3862661086221 is a deficient number, since it is larger than the sum of its proper divisors (2388024938739).

3862661086221 is a wasteful number, since it uses less digits than its factorization.

3862661086221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32106533.

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 3862661086221 in words is "three trillion, eight hundred sixty-two billion, six hundred sixty-one million, eighty-six thousand, two hundred twenty-one".