91429091871 has 8 divisors (see below), whose sum is σ = 131282798640. Its totient is φ = 56264056512.

The previous prime is 91429091851. The next prime is 91429091899. The reversal of 91429091871 is 17819092419.

It is a happy number.

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

It is not a de Polignac number, because 91429091871 - 2⁹ = 91429091359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91429091801) 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, 1172167806 + ... + 1172167883.

It is an arithmetic number, because the mean of its divisors is an integer number (16410349830).

Almost surely, 2^91429091871 is an apocalyptic number.

91429091871 is a deficient number, since it is larger than the sum of its proper divisors (39853706769).

91429091871 is a wasteful number, since it uses less digits than its factorization.

91429091871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344335705.

The product of its (nonzero) digits is 326592, while the sum is 51.

The spelling of 91429091871 in words is "ninety-one billion, four hundred twenty-nine million, ninety-one thousand, eight hundred seventy-one".