667377212067711 has 12 divisors (see below), whose sum is σ = 964419850925440. Its totient is φ = 444719428483680.

The previous prime is 667377212067707. The next prime is 667377212067791. The reversal of 667377212067711 is 117760212773766.

667377212067711 is a `hidden beast` number, since 6 + 67 + 377 + 2 + 120 + 6 + 77 + 11 = 666.

It is not a de Polignac number, because 667377212067711 - 2² = 667377212067707 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 (667377212067791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16559386630 + ... + 16559426931.

Almost surely, 2^{667377212067711} is an apocalyptic number.

667377212067711 is a deficient number, since it is larger than the sum of its proper divisors (297042638857729).

667377212067711 is a wasteful number, since it uses less digits than its factorization.

667377212067711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33118815806 (or 33118815803 counting only the distinct ones).

The product of its (nonzero) digits is 43563744, while the sum is 63.

The spelling of 667377212067711 in words is "six hundred sixty-seven trillion, three hundred seventy-seven billion, two hundred twelve million, sixty-seven thousand, seven hundred eleven".