91545552608 has 24 divisors (see below), whose sum is σ = 180238368240. Its totient is φ = 45770728960.

The previous prime is 91545552607. The next prime is 91545552643. The reversal of 91545552608 is 80625554519.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91545552607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874328 + ... + 973416.

It is an arithmetic number, because the mean of its divisors is an integer number (7509932010).

Almost surely, 2^91545552608 is an apocalyptic number.

It is an amenable number.

91545552608 is a deficient number, since it is larger than the sum of its proper divisors (88692815632).

91545552608 is a wasteful number, since it uses less digits than its factorization.

91545552608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127970 (or 127962 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 50.

The spelling of 91545552608 in words is "ninety-one billion, five hundred forty-five million, five hundred fifty-two thousand, six hundred eight".