2013455351521 has 4 divisors (see below), whose sum is σ = 2013459397312. Its totient is φ = 2013451305732.

The previous prime is 2013455351507. The next prime is 2013455351603. The reversal of 2013455351521 is 1251535543102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2013455351521 - 2⁹ = 2013455351009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013455357521) 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 3 ways as a sum of consecutive naturals, for example, 1151181 + ... + 2313466.

It is an arithmetic number, because the mean of its divisors is an integer number (503364849328).

Almost surely, 2^{2013455351521} is an apocalyptic number.

It is an amenable number.

2013455351521 is a deficient number, since it is larger than the sum of its proper divisors (4045791).

2013455351521 is an equidigital number, since it uses as much as digits as its factorization.

2013455351521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4045790.

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 2013455351521 in words is "two trillion, thirteen billion, four hundred fifty-five million, three hundred fifty-one thousand, five hundred twenty-one".