14155121553 has 64 divisors (see below), whose sum is σ = 20930088960. Its totient is φ = 8473420800.

The previous prime is 14155121551. The next prime is 14155121599. The reversal of 14155121553 is 35512155141.

It is a happy number.

It is not a de Polignac number, because 14155121553 - 2¹ = 14155121551 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14155121551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19154058 + ... + 19154796.

It is an arithmetic number, because the mean of its divisors is an integer number (327032640).

Almost surely, 2^14155121553 is an apocalyptic number.

It is an amenable number.

14155121553 is a deficient number, since it is larger than the sum of its proper divisors (6774967407).

14155121553 is a wasteful number, since it uses less digits than its factorization.

14155121553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its digits is 15000, while the sum is 33.

Adding to 14155121553 its reverse (35512155141), we get a palindrome (49667276694).

The spelling of 14155121553 in words is "fourteen billion, one hundred fifty-five million, one hundred twenty-one thousand, five hundred fifty-three".