511021464012 has 18 divisors (see below), whose sum is σ = 1291748700788. Its totient is φ = 170340487992.

The previous prime is 511021463947. The next prime is 511021464017. The reversal of 511021464012 is 210464120115.

511021464012 is a `hidden beast` number, since 5 + 1 + 1 + 0 + 2 + 1 + 4 + 640 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×511021464012² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511021464017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7097520298 + ... + 7097520369.

Almost surely, 2^511021464012 is an apocalyptic number.

It is an amenable number.

511021464012 is an abundant number, since it is smaller than the sum of its proper divisors (780727236776).

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

511021464012 is a wasteful number, since it uses less digits than its factorization.

511021464012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14195040677 (or 14195040672 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 511021464012 its reverse (210464120115), we get a palindrome (721485584127).

The spelling of 511021464012 in words is "five hundred eleven billion, twenty-one million, four hundred sixty-four thousand, twelve".