1212604324878 has 16 divisors (see below), whose sum is σ = 2429863567056. Its totient is φ = 403425622080.

The previous prime is 1212604324849. The next prime is 1212604324879. The reversal of 1212604324878 is 8784234062121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212604324879) 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, 193951501 + ... + 193957752.

It is an arithmetic number, because the mean of its divisors is an integer number (151866472941).

Almost surely, 2^{1212604324878} is an apocalyptic number.

1212604324878 is an abundant number, since it is smaller than the sum of its proper divisors (1217259242178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212604324878 is a wasteful number, since it uses less digits than its factorization.

1212604324878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387909779.

The product of its (nonzero) digits is 1032192, while the sum is 48.

Adding to 1212604324878 its reverse (8784234062121), we get a palindrome (9996838386999).

The spelling of 1212604324878 in words is "one trillion, two hundred twelve billion, six hundred four million, three hundred twenty-four thousand, eight hundred seventy-eight".