146573210521 has 4 divisors (see below), whose sum is σ = 146604581172. Its totient is φ = 146541839872.

The previous prime is 146573210479. The next prime is 146573210561. The reversal of 146573210521 is 125012375641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103691084121 + 42882126400 = 322011^2 + 207080^2 .

It is a cyclic number.

It is not a de Polignac number, because 146573210521 - 2¹¹ = 146573208473 is a prime.

It is a super-3 number, since 3×146573210521³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146573210561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15678316 + ... + 15687661.

It is an arithmetic number, because the mean of its divisors is an integer number (36651145293).

Almost surely, 2^146573210521 is an apocalyptic number.

It is an amenable number.

146573210521 is a deficient number, since it is larger than the sum of its proper divisors (31370651).

146573210521 is an equidigital number, since it uses as much as digits as its factorization.

146573210521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31370650.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 146573210521 in words is "one hundred forty-six billion, five hundred seventy-three million, two hundred ten thousand, five hundred twenty-one".