42511221313 has 4 divisors (see below), whose sum is σ = 46375877808. Its totient is φ = 38646564820.

The previous prime is 42511221271. The next prime is 42511221353. The reversal of 42511221313 is 31312211524.

42511221313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42511221313 - 2¹⁷ = 42511090241 is a prime.

It is a super-3 number, since 3×42511221313³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42511221353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1932328231 + ... + 1932328252.

It is an arithmetic number, because the mean of its divisors is an integer number (11593969452).

Almost surely, 2^42511221313 is an apocalyptic number.

It is an amenable number.

42511221313 is a deficient number, since it is larger than the sum of its proper divisors (3864656495).

42511221313 is a wasteful number, since it uses less digits than its factorization.

42511221313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3864656494.

The product of its digits is 1440, while the sum is 25.

Adding to 42511221313 its reverse (31312211524), we get a palindrome (73823432837).

The spelling of 42511221313 in words is "forty-two billion, five hundred eleven million, two hundred twenty-one thousand, three hundred thirteen".