511404245324431 has 4 divisors (see below), whose sum is σ = 541486847990592. Its totient is φ = 481321642658272.

The previous prime is 511404245324369. The next prime is 511404245324507. The reversal of 511404245324431 is 134423542404115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 511404245324431 - 2¹⁵ = 511404245291663 is a prime.

It is a super-2 number, since 2×511404245324431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511404242324431) 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, 15041301333055 + ... + 15041301333088.

It is an arithmetic number, because the mean of its divisors is an integer number (135371711997648).

Almost surely, 2^{511404245324431} is an apocalyptic number.

511404245324431 is a deficient number, since it is larger than the sum of its proper divisors (30082602666161).

511404245324431 is a wasteful number, since it uses less digits than its factorization.

511404245324431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30082602666160.

The product of its (nonzero) digits is 921600, while the sum is 43.

Adding to 511404245324431 its reverse (134423542404115), we get a palindrome (645827787728546).

The spelling of 511404245324431 in words is "five hundred eleven trillion, four hundred four billion, two hundred forty-five million, three hundred twenty-four thousand, four hundred thirty-one".