146530223521 has 16 divisors (see below), whose sum is σ = 169303046400. Its totient is φ = 125337242880.

The previous prime is 146530223479. The next prime is 146530223537. The reversal of 146530223521 is 125322035641.

It is a cyclic number.

It is not a de Polignac number, because 146530223521 - 2⁷ = 146530223393 is a prime.

It is a super-2 number, since 2×146530223521² (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 (146530223591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546280 + ... + 769078.

It is an arithmetic number, because the mean of its divisors is an integer number (10581440400).

Almost surely, 2^146530223521 is an apocalyptic number.

146530223521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

146530223521 is a deficient number, since it is larger than the sum of its proper divisors (22772822879).

146530223521 is a wasteful number, since it uses less digits than its factorization.

146530223521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226344.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 146530223521 in words is "one hundred forty-six billion, five hundred thirty million, two hundred twenty-three thousand, five hundred twenty-one".