12698877878 has 8 divisors (see below), whose sum is σ = 19050817872. Its totient is φ = 6348605256.

The previous prime is 12698877871. The next prime is 12698877901. The reversal of 12698877878 is 87877889621.

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

It is a super-2 number, since 2×12698877878² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12698877871) 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, 397625 + ... + 428372.

It is an arithmetic number, because the mean of its divisors is an integer number (2381352234).

Almost surely, 2^12698877878 is an apocalyptic number.

12698877878 is a deficient number, since it is larger than the sum of its proper divisors (6351939994).

12698877878 is an equidigital number, since it uses as much as digits as its factorization.

12698877878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833686.

The product of its digits is 151732224, while the sum is 71.

The spelling of 12698877878 in words is "twelve billion, six hundred ninety-eight million, eight hundred seventy-seven thousand, eight hundred seventy-eight".