66667400034037 has 4 divisors (see below), whose sum is σ = 72728072764416. Its totient is φ = 60606727303660.

The previous prime is 66667400034023. The next prime is 66667400034107. The reversal of 66667400034037 is 73043000476666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66667400034037 - 2¹¹ = 66667400031989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66667400034737) 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, 3030336365173 + ... + 3030336365194.

It is an arithmetic number, because the mean of its divisors is an integer number (18182018191104).

Almost surely, 2^{66667400034037} is an apocalyptic number.

It is an amenable number.

66667400034037 is a deficient number, since it is larger than the sum of its proper divisors (6060672730379).

66667400034037 is a wasteful number, since it uses less digits than its factorization.

66667400034037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060672730378.

The product of its (nonzero) digits is 9144576, while the sum is 52.

The spelling of 66667400034037 in words is "sixty-six trillion, six hundred sixty-seven billion, four hundred million, thirty-four thousand, thirty-seven".