146430426521 has 4 divisors (see below), whose sum is σ = 146656749312. Its totient is φ = 146204103732.

The previous prime is 146430426491. The next prime is 146430426547. The reversal of 146430426521 is 125624034641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146430426521 is a prime.

It is a super-2 number, since 2×146430426521² (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 (146430429521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113160425 + ... + 113161718.

It is an arithmetic number, because the mean of its divisors is an integer number (36664187328).

Almost surely, 2^146430426521 is an apocalyptic number.

It is an amenable number.

146430426521 is a deficient number, since it is larger than the sum of its proper divisors (226322791).

146430426521 is an equidigital number, since it uses as much as digits as its factorization.

146430426521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226322790.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 146430426521 in words is "one hundred forty-six billion, four hundred thirty million, four hundred twenty-six thousand, five hundred twenty-one".