667972751711 has 2 divisors, whose sum is σ = 667972751712. Its totient is φ = 667972751710.

The previous prime is 667972751603. The next prime is 667972751801. The reversal of 667972751711 is 117157279766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667972751711 - 2²⁶ = 667905642847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667972711711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333986375855 + 333986375856.

It is an arithmetic number, because the mean of its divisors is an integer number (333986375856).

Almost surely, 2^667972751711 is an apocalyptic number.

667972751711 is a deficient number, since it is larger than the sum of its proper divisors (1).

667972751711 is an equidigital number, since it uses as much as digits as its factorization.

667972751711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7779240, while the sum is 59.

The spelling of 667972751711 in words is "six hundred sixty-seven billion, nine hundred seventy-two million, seven hundred fifty-one thousand, seven hundred eleven".