91061692051 has 8 divisors (see below), whose sum is σ = 99888869808. Its totient is φ = 82325988000.

The previous prime is 91061691979. The next prime is 91061692097. The reversal of 91061692051 is 15029616019.

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 91061692051 - 2³⁵ = 56701953683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91061691995 and 91061692013.

It is not an unprimeable number, because it can be changed into a prime (91061692751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22866340 + ... + 22870321.

It is an arithmetic number, because the mean of its divisors is an integer number (12486108726).

Almost surely, 2^91061692051 is an apocalyptic number.

91061692051 is a deficient number, since it is larger than the sum of its proper divisors (8827177757).

91061692051 is a wasteful number, since it uses less digits than its factorization.

91061692051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45736853.

The product of its (nonzero) digits is 29160, while the sum is 40.

The spelling of 91061692051 in words is "ninety-one billion, sixty-one million, six hundred ninety-two thousand, fifty-one".