1213013747533 has 16 divisors (see below), whose sum is σ = 1436928528384. Its totient is φ = 1002416096880.

The previous prime is 1213013747527. The next prime is 1213013747581. The reversal of 1213013747533 is 3357473103121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213013747533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213013777533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27492673 + ... + 27536758.

It is an arithmetic number, because the mean of its divisors is an integer number (89808033024).

Almost surely, 2^{1213013747533} is an apocalyptic number.

It is an amenable number.

1213013747533 is a deficient number, since it is larger than the sum of its proper divisors (223914780851).

1213013747533 is an equidigital number, since it uses as much as digits as its factorization.

1213013747533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55029552.

The product of its (nonzero) digits is 158760, while the sum is 40.

The spelling of 1213013747533 in words is "one trillion, two hundred thirteen billion, thirteen million, seven hundred forty-seven thousand, five hundred thirty-three".