511772051165440 has 144 divisors (see below), whose sum is σ = 1320269234860800. Its totient is φ = 188944985972736.

The previous prime is 511772051165407. The next prime is 511772051165447. The reversal of 511772051165440 is 44561150277115.

It is not an unprimeable number, because it can be changed into a prime (511772051165447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184307701 + ... + 187063819.

It is an arithmetic number, because the mean of its divisors is an integer number (9168536353200).

Almost surely, 2^{511772051165440} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 511772051165440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660134617430400).

511772051165440 is an abundant number, since it is smaller than the sum of its proper divisors (808497183695360).

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

511772051165440 is a wasteful number, since it uses less digits than its factorization.

511772051165440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767312 (or 2767298 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 49.

The spelling of 511772051165440 in words is "five hundred eleven trillion, seven hundred seventy-two billion, fifty-one million, one hundred sixty-five thousand, four hundred forty".