91470663567 has 12 divisors (see below), whose sum is σ = 132248833704. Its totient is φ = 60922961520.

The previous prime is 91470663527. The next prime is 91470663623. The reversal of 91470663567 is 76536607419.

It is a happy number.

91470663567 is a `hidden beast` number, since 9 + 1 + 4 + 70 + 6 + 6 + 3 + 567 = 666.

It is not a de Polignac number, because 91470663567 - 2¹⁴ = 91470647183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91470663527) 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 in 11 ways as a sum of consecutive naturals, for example, 4779993 + ... + 4799090.

It is an arithmetic number, because the mean of its divisors is an integer number (11020736142).

Almost surely, 2^91470663567 is an apocalyptic number.

91470663567 is a deficient number, since it is larger than the sum of its proper divisors (40778170137).

91470663567 is a wasteful number, since it uses less digits than its factorization.

91470663567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9580150 (or 9580147 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 91470663567 in words is "ninety-one billion, four hundred seventy million, six hundred sixty-three thousand, five hundred sixty-seven".