12557034479 has 16 divisors (see below), whose sum is σ = 14511584160. Its totient is φ = 10738652160.

The previous prime is 12557034463. The next prime is 12557034491. The reversal of 12557034479 is 97443075521.

It is a cyclic number.

It is not a de Polignac number, because 12557034479 - 2⁴ = 12557034463 is a prime.

It is a super-2 number, since 2×12557034479² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557034409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387017 + ... + 418205.

It is an arithmetic number, because the mean of its divisors is an integer number (906974010).

Almost surely, 2^12557034479 is an apocalyptic number.

12557034479 is a deficient number, since it is larger than the sum of its proper divisors (1954549681).

12557034479 is a wasteful number, since it uses less digits than its factorization.

12557034479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33370.

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 12557034479 in words is "twelve billion, five hundred fifty-seven million, thirty-four thousand, four hundred seventy-nine".