66731173213046 has 8 divisors (see below), whose sum is σ = 100141991077824. Its totient is φ = 33350509520440.

The previous prime is 66731173213027. The next prime is 66731173213051. The reversal of 66731173213046 is 64031237113766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66731173213046² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66731173212985 and 66731173213003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7538537510 + ... + 7538546361.

It is an arithmetic number, because the mean of its divisors is an integer number (12517748884728).

Almost surely, 2^{66731173213046} is an apocalyptic number.

66731173213046 is a deficient number, since it is larger than the sum of its proper divisors (33410817864778).

66731173213046 is a wasteful number, since it uses less digits than its factorization.

66731173213046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15077086086.

The product of its (nonzero) digits is 2286144, while the sum is 50.

The spelling of 66731173213046 in words is "sixty-six trillion, seven hundred thirty-one billion, one hundred seventy-three million, two hundred thirteen thousand, forty-six".