91916423559042 has 32 divisors (see below), whose sum is σ = 186847268164224. Its totient is φ = 30136408473600.

The previous prime is 91916423559011. The next prime is 91916423559043. The reversal of 91916423559042 is 24095532461919.

It is a super-2 number, since 2×91916423559042² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91916423559043) 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, 143529858 + ... + 144168834.

It is an arithmetic number, because the mean of its divisors is an integer number (5838977130132).

Almost surely, 2^{91916423559042} is an apocalyptic number.

91916423559042 is an abundant number, since it is smaller than the sum of its proper divisors (94930844605182).

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

91916423559042 is a wasteful number, since it uses less digits than its factorization.

91916423559042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032074.

The product of its (nonzero) digits is 20995200, while the sum is 60.

The spelling of 91916423559042 in words is "ninety-one trillion, nine hundred sixteen billion, four hundred twenty-three million, five hundred fifty-nine thousand, forty-two".