66411643131 has 48 divisors (see below), whose sum is σ = 104024853504. Its totient is φ = 40664961792.

The previous prime is 66411643091. The next prime is 66411643153. The reversal of 66411643131 is 13134611466.

66411643131 is a `hidden beast` number, since 6 + 6 + 4 + 1 + 1 + 643 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 66411643131 - 2¹⁰ = 66411642107 is a prime.

It is a super-2 number, since 2×66411643131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66411643031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8726530 + ... + 8734136.

It is an arithmetic number, because the mean of its divisors is an integer number (2167184448).

Almost surely, 2^66411643131 is an apocalyptic number.

66411643131 is a deficient number, since it is larger than the sum of its proper divisors (37613210373).

66411643131 is a wasteful number, since it uses less digits than its factorization.

66411643131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000 (or 8997 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The spelling of 66411643131 in words is "sixty-six billion, four hundred eleven million, six hundred forty-three thousand, one hundred thirty-one".