667463072969 has 16 divisors (see below), whose sum is σ = 832192198656. Its totient is φ = 520082067600.

The previous prime is 667463072909. The next prime is 667463073023. The reversal of 667463072969 is 969270364766.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667463072969 is a prime.

It is a super-2 number, since 2×667463072969² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (667463072909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2182784 + ... + 2469710.

It is an arithmetic number, because the mean of its divisors is an integer number (52012012416).

Almost surely, 2^667463072969 is an apocalyptic number.

It is an amenable number.

667463072969 is a deficient number, since it is larger than the sum of its proper divisors (164729125687).

667463072969 is a wasteful number, since it uses less digits than its factorization.

667463072969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317156.

The product of its (nonzero) digits is 123451776, while the sum is 65.

The spelling of 667463072969 in words is "six hundred sixty-seven billion, four hundred sixty-three million, seventy-two thousand, nine hundred sixty-nine".