511256252673 has 12 divisors (see below), whose sum is σ = 762303230208. Its totient is φ = 329842743480.

The previous prime is 511256252657. The next prime is 511256252681. The reversal of 511256252673 is 376252652115.

It is a happy number.

511256252673 is a `hidden beast` number, since 5 + 1 + 1 + 2 + 56 + 2 + 526 + 73 = 666.

It is not a de Polignac number, because 511256252673 - 2⁴ = 511256252657 is a prime.

It is a super-2 number, since 2×511256252673² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (511256252603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 916229565 + ... + 916230122.

It is an arithmetic number, because the mean of its divisors is an integer number (63525269184).

Almost surely, 2^511256252673 is an apocalyptic number.

It is an amenable number.

511256252673 is a deficient number, since it is larger than the sum of its proper divisors (251046977535).

511256252673 is a wasteful number, since it uses less digits than its factorization.

511256252673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832459724 (or 1832459721 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The spelling of 511256252673 in words is "five hundred eleven billion, two hundred fifty-six million, two hundred fifty-two thousand, six hundred seventy-three".