146423235521 has 8 divisors (see below), whose sum is σ = 149512409064. Its totient is φ = 143346153600.

The previous prime is 146423235509. The next prime is 146423235529. The reversal of 146423235521 is 125532324641.

It can be written as a sum of positive squares in 4 ways, for example, as 62818404496 + 83604831025 = 250636^2 + 289145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 146423235521 - 2³⁰ = 145349493697 is a prime.

It is a super-2 number, since 2×146423235521² (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 (146423235529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2998430 + ... + 3046871.

It is an arithmetic number, because the mean of its divisors is an integer number (18689051133).

Almost surely, 2^146423235521 is an apocalyptic number.

It is an amenable number.

146423235521 is a deficient number, since it is larger than the sum of its proper divisors (3089173543).

146423235521 is an equidigital number, since it uses as much as digits as its factorization.

146423235521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6045811.

The product of its digits is 172800, while the sum is 38.

The spelling of 146423235521 in words is "one hundred forty-six billion, four hundred twenty-three million, two hundred thirty-five thousand, five hundred twenty-one".