1219530697577 has 2 divisors, whose sum is σ = 1219530697578. Its totient is φ = 1219530697576.

The previous prime is 1219530697549. The next prime is 1219530697579. The reversal of 1219530697577 is 7757960359121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 693062910016 + 526467787561 = 832504^2 + 725581^2 .

It is a cyclic number.

It is not a de Polignac number, because 1219530697577 - 2⁶ = 1219530697513 is a prime.

Together with 1219530697579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1219530697579) 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 as a sum of consecutive naturals, namely, 609765348788 + 609765348789.

It is an arithmetic number, because the mean of its divisors is an integer number (609765348789).

Almost surely, 2^{1219530697577} is an apocalyptic number.

It is an amenable number.

1219530697577 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219530697577 is an equidigital number, since it uses as much as digits as its factorization.

1219530697577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25004700, while the sum is 62.

The spelling of 1219530697577 in words is "one trillion, two hundred nineteen billion, five hundred thirty million, six hundred ninety-seven thousand, five hundred seventy-seven".