66810275037 has 32 divisors (see below), whose sum is σ = 109806336000. Its totient is φ = 39804775920.

The previous prime is 66810275029. The next prime is 66810275039. The reversal of 66810275037 is 73057201866.

66810275037 is a `hidden beast` number, since 66 + 81 + 0 + 2 + 7 + 503 + 7 = 666.

It is not a de Polignac number, because 66810275037 - 2³ = 66810275029 is a prime.

It is a super-2 number, since 2×66810275037² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66810274983 and 66810275001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66810275039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1888837 + ... + 1923882.

It is an arithmetic number, because the mean of its divisors is an integer number (3431448000).

Almost surely, 2^66810275037 is an apocalyptic number.

It is an amenable number.

66810275037 is a deficient number, since it is larger than the sum of its proper divisors (42996060963).

66810275037 is a wasteful number, since it uses less digits than its factorization.

66810275037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3812798 (or 3812792 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 66810275037 in words is "sixty-six billion, eight hundred ten million, two hundred seventy-five thousand, thirty-seven".