91273203195 has 16 divisors (see below), whose sum is σ = 146450836512. Its totient is φ = 48541137920.

The previous prime is 91273203191. The next prime is 91273203277. The reversal of 91273203195 is 59130237219.

It is not a de Polignac number, because 91273203195 - 2² = 91273203191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91273203191) 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 15 ways as a sum of consecutive naturals, for example, 8613516 + ... + 8624105.

It is an arithmetic number, because the mean of its divisors is an integer number (9153177282).

Almost surely, 2^91273203195 is an apocalyptic number.

91273203195 is a deficient number, since it is larger than the sum of its proper divisors (55177633317).

91273203195 is a wasteful number, since it uses less digits than its factorization.

91273203195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17237982.

The product of its (nonzero) digits is 102060, while the sum is 42.

The spelling of 91273203195 in words is "ninety-one billion, two hundred seventy-three million, two hundred three thousand, one hundred ninety-five".