105550353491 has 24 divisors (see below), whose sum is σ = 122924334960. Its totient is φ = 90250490880.

The previous prime is 105550353427. The next prime is 105550353499. The reversal of 105550353491 is 194353055501.

It is not a de Polignac number, because 105550353491 - 2⁶ = 105550353427 is a prime.

It is a super-2 number, since 2×105550353491² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105550353499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3231755 + ... + 3264251.

It is an arithmetic number, because the mean of its divisors is an integer number (5121847290).

Almost surely, 2^105550353491 is an apocalyptic number.

105550353491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

105550353491 is a deficient number, since it is larger than the sum of its proper divisors (17373981469).

105550353491 is a wasteful number, since it uses less digits than its factorization.

105550353491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34115 (or 34104 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 41.

The spelling of 105550353491 in words is "one hundred five billion, five hundred fifty million, three hundred fifty-three thousand, four hundred ninety-one".