1213537537411 has 4 divisors (see below), whose sum is σ = 1216739483800. Its totient is φ = 1210335591024.

The previous prime is 1213537537397. The next prime is 1213537537483. The reversal of 1213537537411 is 1147357353121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1213537537411 - 2⁵ = 1213537537379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213537537711) 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 3 ways as a sum of consecutive naturals, for example, 1600972626 + ... + 1600973383.

It is an arithmetic number, because the mean of its divisors is an integer number (304184870950).

Almost surely, 2^{1213537537411} is an apocalyptic number.

1213537537411 is a deficient number, since it is larger than the sum of its proper divisors (3201946389).

1213537537411 is an equidigital number, since it uses as much as digits as its factorization.

1213537537411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201946388.

The product of its digits is 264600, while the sum is 43.

The spelling of 1213537537411 in words is "one trillion, two hundred thirteen billion, five hundred thirty-seven million, five hundred thirty-seven thousand, four hundred eleven".