511161266160 has 60 divisors (see below), whose sum is σ = 1716649921272. Its totient is φ = 136309670784.

The previous prime is 511161266149. The next prime is 511161266167. The reversal of 511161266160 is 61662161115.

511161266160 is a `hidden beast` number, since 5 + 1 + 1 + 16 + 1 + 26 + 616 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×511161266160² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511161266167) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 354972382 + ... + 354973821.

Almost surely, 2^511161266160 is an apocalyptic number.

It is an amenable number.

511161266160 is an abundant number, since it is smaller than the sum of its proper divisors (1205488655112).

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

511161266160 is a wasteful number, since it uses less digits than its factorization.

511161266160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709946222 (or 709946213 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The spelling of 511161266160 in words is "five hundred eleven billion, one hundred sixty-one million, two hundred sixty-six thousand, one hundred sixty".