14155400217 has 32 divisors (see below), whose sum is σ = 23074474752. Its totient is φ = 7534485504.

The previous prime is 14155400191. The next prime is 14155400243. The reversal of 14155400217 is 71200455141.

It is an interprime number because it is at equal distance from previous prime (14155400191) and next prime (14155400243).

It is not a de Polignac number, because 14155400217 - 2⁶ = 14155400153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (14155400297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169758 + ... + 239015.

It is an arithmetic number, because the mean of its divisors is an integer number (721077336).

Almost surely, 2^14155400217 is an apocalyptic number.

14155400217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

14155400217 is a deficient number, since it is larger than the sum of its proper divisors (8919074535).

14155400217 is a wasteful number, since it uses less digits than its factorization.

14155400217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408897.

The product of its (nonzero) digits is 5600, while the sum is 30.

Adding to 14155400217 its reverse (71200455141), we get a palindrome (85355855358).

The spelling of 14155400217 in words is "fourteen billion, one hundred fifty-five million, four hundred thousand, two hundred seventeen".