12518377047 has 24 divisors (see below), whose sum is σ = 19729661328. Its totient is φ = 7585459200.

The previous prime is 12518377037. The next prime is 12518377061. The reversal of 12518377047 is 74077381521.

It is not a de Polignac number, because 12518377047 - 2¹⁰ = 12518376023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12518376993 and 12518377011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12518377037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 771397 + ... + 787457.

It is an arithmetic number, because the mean of its divisors is an integer number (822069222).

Almost surely, 2^12518377047 is an apocalyptic number.

12518377047 is a deficient number, since it is larger than the sum of its proper divisors (7211284281).

12518377047 is a wasteful number, since it uses less digits than its factorization.

12518377047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23951 (or 23948 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

It can be divided in two parts, 1251837 and 7047, that added together give a square (1258884 = 1122²).

The spelling of 12518377047 in words is "twelve billion, five hundred eighteen million, three hundred seventy-seven thousand, forty-seven".