511213225513 has 8 divisors (see below), whose sum is σ = 514551038400. Its totient is φ = 507878706480.

The previous prime is 511213225493. The next prime is 511213225529. The reversal of 511213225513 is 315522312115.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511213225513 is a prime.

It is a super-2 number, since 2×511213225513² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511213225573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511663 + ... + 1133236.

It is an arithmetic number, because the mean of its divisors is an integer number (64318879800).

Almost surely, 2^511213225513 is an apocalyptic number.

It is an amenable number.

511213225513 is a deficient number, since it is larger than the sum of its proper divisors (3337812887).

511213225513 is a wasteful number, since it uses less digits than its factorization.

511213225513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646927.

The product of its digits is 9000, while the sum is 31.

Adding to 511213225513 its reverse (315522312115), we get a palindrome (826735537628).

The spelling of 511213225513 in words is "five hundred eleven billion, two hundred thirteen million, two hundred twenty-five thousand, five hundred thirteen".