91118361082121 has 8 divisors (see below), whose sum is σ = 94062775193088. Its totient is φ = 88174266480000.

The previous prime is 91118361082109. The next prime is 91118361082123. The reversal of 91118361082121 is 12128016381119.

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

It is a cyclic number.

It is not a de Polignac number, because 91118361082121 - 2⁶ = 91118361082057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91118361082123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79297565 + ... + 80438426.

It is an arithmetic number, because the mean of its divisors is an integer number (11757846899136).

Almost surely, 2^{91118361082121} is an apocalyptic number.

It is an amenable number.

91118361082121 is a deficient number, since it is larger than the sum of its proper divisors (2944414110967).

91118361082121 is a wasteful number, since it uses less digits than its factorization.

91118361082121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159754423.

The product of its (nonzero) digits is 41472, while the sum is 44.

The spelling of 91118361082121 in words is "ninety-one trillion, one hundred eighteen billion, three hundred sixty-one million, eighty-two thousand, one hundred twenty-one".