91120467769 has 4 divisors (see below), whose sum is σ = 91141957620. Its totient is φ = 91098977920.

The previous prime is 91120467761. The next prime is 91120467793. The reversal of 91120467769 is 96776402119.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96776402119 = 44111 ⋅2193929.

It can be written as a sum of positive squares in 2 ways, for example, as 50301518400 + 40818949369 = 224280^2 + 202037^2 .

It is a cyclic number.

It is not a de Polignac number, because 91120467769 - 2³ = 91120467761 is a prime.

It is a super-3 number, since 3×91120467769³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91120467761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10738564 + ... + 10747045.

It is an arithmetic number, because the mean of its divisors is an integer number (22785489405).

Almost surely, 2^91120467769 is an apocalyptic number.

It is an amenable number.

91120467769 is a deficient number, since it is larger than the sum of its proper divisors (21489851).

91120467769 is a wasteful number, since it uses less digits than its factorization.

91120467769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21489850.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 91120467769 in words is "ninety-one billion, one hundred twenty million, four hundred sixty-seven thousand, seven hundred sixty-nine".