11670021767 has 2 divisors, whose sum is σ = 11670021768. Its totient is φ = 11670021766.

The previous prime is 11670021751. The next prime is 11670021799. The reversal of 11670021767 is 76712007611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11670021767 - 2⁴ = 11670021751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11670021767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11670021367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5835010883 + 5835010884.

It is an arithmetic number, because the mean of its divisors is an integer number (5835010884).

Almost surely, 2^11670021767 is an apocalyptic number.

11670021767 is a deficient number, since it is larger than the sum of its proper divisors (1).

11670021767 is an equidigital number, since it uses as much as digits as its factorization.

11670021767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 38.

The spelling of 11670021767 in words is "eleven billion, six hundred seventy million, twenty-one thousand, seven hundred sixty-seven".