91990000110101 has 8 divisors (see below), whose sum is σ = 93549781945440. Its totient is φ = 90430239251248.

The previous prime is 91990000110089. The next prime is 91990000110109. The reversal of 91990000110101 is 10101100009919.

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 91990000110101 - 2⁴² = 87591953598997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91990000110109) 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, 3730115 + ... + 14067471.

It is an arithmetic number, because the mean of its divisors is an integer number (11693722743180).

Almost surely, 2^{91990000110101} is an apocalyptic number.

It is an amenable number.

91990000110101 is a deficient number, since it is larger than the sum of its proper divisors (1559781835339).

91990000110101 is a wasteful number, since it uses less digits than its factorization.

91990000110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10488243.

The product of its (nonzero) digits is 729, while the sum is 32.

The spelling of 91990000110101 in words is "ninety-one trillion, nine hundred ninety billion, one hundred ten thousand, one hundred one".