1213347585813 has 16 divisors (see below), whose sum is σ = 1764901909056. Its totient is φ = 735348551040.

The previous prime is 1213347585811. The next prime is 1213347585823. The reversal of 1213347585813 is 3185857433121.

It is not a de Polignac number, because 1213347585813 - 2¹ = 1213347585811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213347585811) 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 15 ways as a sum of consecutive naturals, for example, 1639731 + ... + 2261727.

It is an arithmetic number, because the mean of its divisors is an integer number (110306369316).

Almost surely, 2^{1213347585813} is an apocalyptic number.

It is an amenable number.

1213347585813 is a deficient number, since it is larger than the sum of its proper divisors (551554323243).

1213347585813 is a wasteful number, since it uses less digits than its factorization.

1213347585813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681124.

The product of its digits is 2419200, while the sum is 51.

The spelling of 1213347585813 in words is "one trillion, two hundred thirteen billion, three hundred forty-seven million, five hundred eighty-five thousand, eight hundred thirteen".