91475857419 has 16 divisors (see below), whose sum is σ = 126181393920. Its totient is φ = 58877372960.

The previous prime is 91475857387. The next prime is 91475857457.

91475857419 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 91475857419 - 2⁵ = 91475857387 is a prime.

It is a super-2 number, since 2×91475857419² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91475850419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2633374 + ... + 2667884.

It is an arithmetic number, because the mean of its divisors is an integer number (7886337120).

Almost surely, 2^91475857419 is an apocalyptic number.

91475857419 is a deficient number, since it is larger than the sum of its proper divisors (34705536501).

91475857419 is a wasteful number, since it uses less digits than its factorization.

91475857419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65010.

The product of its digits is 12700800, while the sum is 60.

The spelling of 91475857419 in words is "ninety-one billion, four hundred seventy-five million, eight hundred fifty-seven thousand, four hundred nineteen".