146321399569 has 2 divisors, whose sum is σ = 146321399570. Its totient is φ = 146321399568.

The previous prime is 146321399507. The next prime is 146321399573. The reversal of 146321399569 is 965993123641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125103690000 + 21217709569 = 353700^2 + 145663^2 .

It is a cyclic number.

It is not a de Polignac number, because 146321399569 - 2¹⁵ = 146321366801 is a prime.

It is a super-2 number, since 2×146321399569² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (146321399869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73160699784 + 73160699785.

It is an arithmetic number, because the mean of its divisors is an integer number (73160699785).

Almost surely, 2^146321399569 is an apocalyptic number.

It is an amenable number.

146321399569 is a deficient number, since it is larger than the sum of its proper divisors (1).

146321399569 is an equidigital number, since it uses as much as digits as its factorization.

146321399569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9447840, while the sum is 58.

The spelling of 146321399569 in words is "one hundred forty-six billion, three hundred twenty-one million, three hundred ninety-nine thousand, five hundred sixty-nine".