511255322241213 has 16 divisors (see below), whose sum is σ = 744742545443136. Its totient is φ = 309394026963840.

The previous prime is 511255322241101. The next prime is 511255322241233. The reversal of 511255322241213 is 312142223552115.

It is a happy number.

It is not a de Polignac number, because 511255322241213 - 2¹³ = 511255322233021 is a prime.

It is a super-2 number, since 2×511255322241213² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511255322241233) 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, 11442064456 + ... + 11442109137.

It is an arithmetic number, because the mean of its divisors is an integer number (46546409090196).

Almost surely, 2^{511255322241213} is an apocalyptic number.

It is an amenable number.

511255322241213 is a deficient number, since it is larger than the sum of its proper divisors (233487223201923).

511255322241213 is a wasteful number, since it uses less digits than its factorization.

511255322241213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22884174284.

The product of its digits is 144000, while the sum is 39.

Adding to 511255322241213 its reverse (312142223552115), we get a palindrome (823397545793328).

The spelling of 511255322241213 in words is "five hundred eleven trillion, two hundred fifty-five billion, three hundred twenty-two million, two hundred forty-one thousand, two hundred thirteen".