91575150166 has 32 divisors (see below), whose sum is σ = 141378177600. Its totient is φ = 44469000576.

The previous prime is 91575150097. The next prime is 91575150181. The reversal of 91575150166 is 66105157519.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 4144500 + ... + 4166536.

It is an arithmetic number, because the mean of its divisors is an integer number (4418068050).

Almost surely, 2^91575150166 is an apocalyptic number.

91575150166 is a deficient number, since it is larger than the sum of its proper divisors (49803027434).

91575150166 is a wasteful number, since it uses less digits than its factorization.

91575150166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22488.

The product of its (nonzero) digits is 283500, while the sum is 46.

The spelling of 91575150166 in words is "ninety-one billion, five hundred seventy-five million, one hundred fifty thousand, one hundred sixty-six".