91875799757819 has 32 divisors (see below), whose sum is σ = 116516571709440. Its totient is φ = 70368334826400.

The previous prime is 91875799757809. The next prime is 91875799757837.

It is a happy number.

91875799757819 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 91875799757819 - 2³² = 91871504790523 is a prime.

It is a super-2 number, since 2×91875799757819² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91875799757809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32508287 + ... + 35221304.

It is an arithmetic number, because the mean of its divisors is an integer number (3641142865920).

Almost surely, 2^{91875799757819} is an apocalyptic number.

91875799757819 is a deficient number, since it is larger than the sum of its proper divisors (24640771951621).

91875799757819 is a wasteful number, since it uses less digits than its factorization.

91875799757819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67729911.

The product of its digits is 25204737600, while the sum is 92.

The spelling of 91875799757819 in words is "ninety-one trillion, eight hundred seventy-five billion, seven hundred ninety-nine million, seven hundred fifty-seven thousand, eight hundred nineteen".