2066937735869 has 4 divisors (see below), whose sum is σ = 2117350851420. Its totient is φ = 2016524620320.

The previous prime is 2066937735859. The next prime is 2066937735871. The reversal of 2066937735869 is 9685377396602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1107051187225 + 959886548644 = 1052165^2 + 979738^2 .

It is a cyclic number.

It is not a de Polignac number, because 2066937735869 - 2³² = 2062642768573 is a prime.

It is a super-2 number, since 2×2066937735869² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066937735859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25206557714 + ... + 25206557795.

It is an arithmetic number, because the mean of its divisors is an integer number (529337712855).

Almost surely, 2^{2066937735869} is an apocalyptic number.

It is an amenable number.

2066937735869 is a deficient number, since it is larger than the sum of its proper divisors (50413115551).

2066937735869 is an equidigital number, since it uses as much as digits as its factorization.

2066937735869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50413115550.

The product of its (nonzero) digits is 617258880, while the sum is 71.

The spelling of 2066937735869 in words is "two trillion, sixty-six billion, nine hundred thirty-seven million, seven hundred thirty-five thousand, eight hundred sixty-nine".