511005109992 has 64 divisors (see below), whose sum is σ = 1380478740480. Its totient is φ = 156695684352.

The previous prime is 511005109973. The next prime is 511005110069. The reversal of 511005109992 is 299901500115.

It is a super-2 number, since 2×511005109992² (a number of 24 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 2703528 + ... + 2886359.

It is an arithmetic number, because the mean of its divisors is an integer number (21569980320).

Almost surely, 2^511005109992 is an apocalyptic number.

511005109992 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

511005109992 is an abundant number, since it is smaller than the sum of its proper divisors (869473630488).

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

511005109992 is a wasteful number, since it uses less digits than its factorization.

511005109992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590202 (or 5590198 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 42.

The spelling of 511005109992 in words is "five hundred eleven billion, five million, one hundred nine thousand, nine hundred ninety-two".