91864141005 has 64 divisors (see below), whose sum is σ = 185314042368. Its totient is φ = 37819146240.

The previous prime is 91864140943. The next prime is 91864141013. The reversal of 91864141005 is 50014146819.

It is not a de Polignac number, because 91864141005 - 2⁶ = 91864140941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 764764 + ... + 876693.

It is an arithmetic number, because the mean of its divisors is an integer number (2895531912).

Almost surely, 2^91864141005 is an apocalyptic number.

It is an amenable number.

91864141005 is an abundant number, since it is smaller than the sum of its proper divisors (93449901363).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91864141005 is a wasteful number, since it uses less digits than its factorization.

91864141005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641526.

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 91864141005 in words is "ninety-one billion, eight hundred sixty-four million, one hundred forty-one thousand, five".