511404631464 has 16 divisors (see below), whose sum is σ = 1278511578720. Its totient is φ = 170468210480.

The previous prime is 511404631429. The next prime is 511404631487. The reversal of 511404631464 is 464136404115.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10654263132 + ... + 10654263179.

It is an arithmetic number, because the mean of its divisors is an integer number (79906973670).

Almost surely, 2^511404631464 is an apocalyptic number.

It is an amenable number.

511404631464 is an abundant number, since it is smaller than the sum of its proper divisors (767106947256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511404631464 is a wasteful number, since it uses less digits than its factorization.

511404631464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21308526320 (or 21308526316 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 511404631464 in words is "five hundred eleven billion, four hundred four million, six hundred thirty-one thousand, four hundred sixty-four".