14742779257 has 4 divisors (see below), whose sum is σ = 14772805776. Its totient is φ = 14712752740.

The previous prime is 14742779243. The next prime is 14742779279. The reversal of 14742779257 is 75297724741.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75297724741 = 197 ⋅382221953.

It is a cyclic number.

It is not a de Polignac number, because 14742779257 - 2¹¹ = 14742777209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14742779198 and 14742779207.

It is not an unprimeable number, because it can be changed into a prime (14742779357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15012523 + ... + 15013504.

It is an arithmetic number, because the mean of its divisors is an integer number (3693201444).

Almost surely, 2^14742779257 is an apocalyptic number.

It is an amenable number.

14742779257 is a deficient number, since it is larger than the sum of its proper divisors (30026519).

14742779257 is an equidigital number, since it uses as much as digits as its factorization.

14742779257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30026518.

The product of its digits is 6914880, while the sum is 55.

The spelling of 14742779257 in words is "fourteen billion, seven hundred forty-two million, seven hundred seventy-nine thousand, two hundred fifty-seven".