14478051505 has 4 divisors (see below), whose sum is σ = 17373661812. Its totient is φ = 11582441200.

The previous prime is 14478051457. The next prime is 14478051517. The reversal of 14478051505 is 50515087441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3438766881 + 11039284624 = 58641^2 + 105068^2 .

It is a de Polignac number, because none of the positive numbers 2^k-14478051505 is a prime.

It is a super-2 number, since 2×14478051505² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1447805146 + ... + 1447805155.

It is an arithmetic number, because the mean of its divisors is an integer number (4343415453).

Almost surely, 2^14478051505 is an apocalyptic number.

It is an amenable number.

14478051505 is a deficient number, since it is larger than the sum of its proper divisors (2895610307).

14478051505 is an equidigital number, since it uses as much as digits as its factorization.

14478051505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895610306.

The product of its (nonzero) digits is 112000, while the sum is 40.

The spelling of 14478051505 in words is "fourteen billion, four hundred seventy-eight million, fifty-one thousand, five hundred five".