91200027977 has 8 divisors (see below), whose sum is σ = 94188168000. Its totient is φ = 88239428784.

The previous prime is 91200027953. The next prime is 91200027991. The reversal of 91200027977 is 77972000219.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91200027977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91200027917) 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 7 ways as a sum of consecutive naturals, for example, 6878477 + ... + 6891722.

It is an arithmetic number, because the mean of its divisors is an integer number (11773521000).

Almost surely, 2^91200027977 is an apocalyptic number.

It is an amenable number.

91200027977 is a deficient number, since it is larger than the sum of its proper divisors (2988140023).

91200027977 is a wasteful number, since it uses less digits than its factorization.

91200027977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13770415.

The product of its (nonzero) digits is 111132, while the sum is 44.

The spelling of 91200027977 in words is "ninety-one billion, two hundred million, twenty-seven thousand, nine hundred seventy-seven".