511472171418 has 64 divisors (see below), whose sum is σ = 1109998173312. Its totient is φ = 156181616640.

The previous prime is 511472171263. The next prime is 511472171461. The reversal of 511472171418 is 814171274115.

It is a super-3 number, since 3×511472171418³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 511472171418.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63289138 + ... + 63297218.

It is an arithmetic number, because the mean of its divisors is an integer number (17343721458).

Almost surely, 2^511472171418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511472171418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554999086656).

511472171418 is an abundant number, since it is smaller than the sum of its proper divisors (598526001894).

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

511472171418 is a wasteful number, since it uses less digits than its factorization.

511472171418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14159.

The product of its digits is 62720, while the sum is 42.

The spelling of 511472171418 in words is "five hundred eleven billion, four hundred seventy-two million, one hundred seventy-one thousand, four hundred eighteen".