3888469312321 has 4 divisors (see below), whose sum is σ = 4241966522544. Its totient is φ = 3534972102100.

The previous prime is 3888469312319. The next prime is 3888469312333. The reversal of 3888469312321 is 1232139648883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3888469312321 - 2¹ = 3888469312319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3888469313321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176748605095 + ... + 176748605116.

It is an arithmetic number, because the mean of its divisors is an integer number (1060491630636).

Almost surely, 2^{3888469312321} is an apocalyptic number.

It is an amenable number.

3888469312321 is a deficient number, since it is larger than the sum of its proper divisors (353497210223).

3888469312321 is a wasteful number, since it uses less digits than its factorization.

3888469312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353497210222.

The product of its digits is 11943936, while the sum is 58.

The spelling of 3888469312321 in words is "three trillion, eight hundred eighty-eight billion, four hundred sixty-nine million, three hundred twelve thousand, three hundred twenty-one".