91512230135 has 16 divisors (see below), whose sum is σ = 116112783360. Its totient is φ = 69045605280.

The previous prime is 91512230123. The next prime is 91512230143. The reversal of 91512230135 is 53103221519.

It is not a de Polignac number, because 91512230135 - 2¹⁶ = 91512164599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2138651 + ... + 2181020.

It is an arithmetic number, because the mean of its divisors is an integer number (7257048960).

Almost surely, 2^91512230135 is an apocalyptic number.

91512230135 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

91512230135 is a deficient number, since it is larger than the sum of its proper divisors (24600553225).

91512230135 is a wasteful number, since it uses less digits than its factorization.

91512230135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319918.

The product of its (nonzero) digits is 8100, while the sum is 32.

The spelling of 91512230135 in words is "ninety-one billion, five hundred twelve million, two hundred thirty thousand, one hundred thirty-five".