1214312135878 has 16 divisors (see below), whose sum is σ = 1824738612480. Its totient is φ = 606066337800.

The previous prime is 1214312135873. The next prime is 1214312135891. The reversal of 1214312135878 is 8785312134121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214312135873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6048433 + ... + 6245971.

It is an arithmetic number, because the mean of its divisors is an integer number (114046163280).

Almost surely, 2^{1214312135878} is an apocalyptic number.

1214312135878 is a deficient number, since it is larger than the sum of its proper divisors (610426476602).

1214312135878 is a wasteful number, since it uses less digits than its factorization.

1214312135878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203043.

The product of its digits is 322560, while the sum is 46.

Adding to 1214312135878 its reverse (8785312134121), we get a palindrome (9999624269999).

The spelling of 1214312135878 in words is "one trillion, two hundred fourteen billion, three hundred twelve million, one hundred thirty-five thousand, eight hundred seventy-eight".