66733733674067 has 4 divisors (see below), whose sum is σ = 66733897969296. Its totient is φ = 66733569378840.

The previous prime is 66733733674057. The next prime is 66733733674093. The reversal of 66733733674067 is 76047633733766.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66733733674067 - 2⁸ = 66733733673811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66733733673988 and 66733733674006.

It is not an unprimeable number, because it can be changed into a prime (66733733674057) 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, 81536828 + ... + 82351209.

It is an arithmetic number, because the mean of its divisors is an integer number (16683474492324).

Almost surely, 2^{66733733674067} is an apocalyptic number.

66733733674067 is a deficient number, since it is larger than the sum of its proper divisors (164295229).

66733733674067 is a wasteful number, since it uses less digits than its factorization.

66733733674067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164295228.

The product of its (nonzero) digits is 1008189504, while the sum is 68.

The spelling of 66733733674067 in words is "sixty-six trillion, seven hundred thirty-three billion, seven hundred thirty-three million, six hundred seventy-four thousand, sixty-seven".