12963872557 has 8 divisors (see below), whose sum is σ = 13216534776. Its totient is φ = 12711508992.

The previous prime is 12963872531. The next prime is 12963872569. The reversal of 12963872557 is 75527836921.

It can be written as a sum of positive squares in 4 ways, for example, as 4130504361 + 8833368196 = 64269^2 + 93986^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12963872557 - 2¹¹ = 12963870509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12963872498 and 12963872507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12963872507) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14013 + ... + 161629.

It is an arithmetic number, because the mean of its divisors is an integer number (1652066847).

Almost surely, 2^12963872557 is an apocalyptic number.

It is an amenable number.

12963872557 is a deficient number, since it is larger than the sum of its proper divisors (252662219).

12963872557 is a wasteful number, since it uses less digits than its factorization.

12963872557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149327.

The product of its digits is 6350400, while the sum is 55.

The spelling of 12963872557 in words is "twelve billion, nine hundred sixty-three million, eight hundred seventy-two thousand, five hundred fifty-seven".