3867556090321 has 12 divisors (see below), whose sum is σ = 4907993258160. Its totient is φ = 3013680069960.

The previous prime is 3867556090301. The next prime is 3867556090379. The reversal of 3867556090321 is 1230906557683.

It is not a de Polignac number, because 3867556090321 - 2²⁵ = 3867522535889 is a prime.

It is a super-2 number, since 2×3867556090321² (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 (3867556090301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3587713831 + ... + 3587714908.

It is an arithmetic number, because the mean of its divisors is an integer number (408999438180).

Almost surely, 2^{3867556090321} is an apocalyptic number.

It is an amenable number.

3867556090321 is a deficient number, since it is larger than the sum of its proper divisors (1040437167839).

3867556090321 is a wasteful number, since it uses less digits than its factorization.

3867556090321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7175428764 (or 7175428757 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 3867556090321 in words is "three trillion, eight hundred sixty-seven billion, five hundred fifty-six million, ninety thousand, three hundred twenty-one".