91396581801 has 16 divisors (see below), whose sum is σ = 144073430400. Its totient is φ = 50425699968.

The previous prime is 91396581799. The next prime is 91396581817. The reversal of 91396581801 is 10818569319.

It is not a de Polignac number, because 91396581801 - 2¹ = 91396581799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91396581841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75037636 + ... + 75038853.

It is an arithmetic number, because the mean of its divisors is an integer number (9004589400).

Almost surely, 2^91396581801 is an apocalyptic number.

It is an amenable number.

91396581801 is a deficient number, since it is larger than the sum of its proper divisors (52676848599).

91396581801 is a wasteful number, since it uses less digits than its factorization.

91396581801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150076528.

The product of its (nonzero) digits is 466560, while the sum is 51.

The spelling of 91396581801 in words is "ninety-one billion, three hundred ninety-six million, five hundred eighty-one thousand, eight hundred one".