3155665423421 has 8 divisors (see below), whose sum is σ = 3614615799744. Its totient is φ = 2698750304640.

The previous prime is 3155665423403. The next prime is 3155665423429. The reversal of 3155665423421 is 1243245665513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3155665423421 - 2⁶ = 3155665423357 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 (3155665423429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508811060 + ... + 508817261.

It is an arithmetic number, because the mean of its divisors is an integer number (451826974968).

Almost surely, 2^{3155665423421} is an apocalyptic number.

It is an amenable number.

3155665423421 is a deficient number, since it is larger than the sum of its proper divisors (458950376323).

3155665423421 is a wasteful number, since it uses less digits than its factorization.

3155665423421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017628771.

The product of its digits is 2592000, while the sum is 47.

The spelling of 3155665423421 in words is "three trillion, one hundred fifty-five billion, six hundred sixty-five million, four hundred twenty-three thousand, four hundred twenty-one".