14155403421 has 4 divisors (see below), whose sum is σ = 18873871232. Its totient is φ = 9436935612.

The previous prime is 14155403377. The next prime is 14155403461. The reversal of 14155403421 is 12430455141.

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 not a de Polignac number, because 14155403421 - 2¹³ = 14155395229 is a prime.

It is a super-2 number, since 2×14155403421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14155403461) 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, 2359233901 + ... + 2359233906.

It is an arithmetic number, because the mean of its divisors is an integer number (4718467808).

Almost surely, 2^14155403421 is an apocalyptic number.

It is an amenable number.

14155403421 is a deficient number, since it is larger than the sum of its proper divisors (4718467811).

14155403421 is an equidigital number, since it uses as much as digits as its factorization.

14155403421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718467810.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 14155403421 its reverse (12430455141), we get a palindrome (26585858562).

The spelling of 14155403421 in words is "fourteen billion, one hundred fifty-five million, four hundred three thousand, four hundred twenty-one".