1245355345533 has 32 divisors (see below), whose sum is σ = 1849993689600. Its totient is φ = 739894288896.

The previous prime is 1245355345453. The next prime is 1245355345567. The reversal of 1245355345533 is 3355435535421.

It is not a de Polignac number, because 1245355345533 - 2¹³ = 1245355337341 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245355345733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21558553 + ... + 21616241.

It is an arithmetic number, because the mean of its divisors is an integer number (57812302800).

Almost surely, 2^{1245355345533} is an apocalyptic number.

1245355345533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1245355345533 is a deficient number, since it is larger than the sum of its proper divisors (604638344067).

1245355345533 is a wasteful number, since it uses less digits than its factorization.

1245355345533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76821.

The product of its digits is 8100000, while the sum is 48.

The spelling of 1245355345533 in words is "one trillion, two hundred forty-five billion, three hundred fifty-five million, three hundred forty-five thousand, five hundred thirty-three".