1305642332506 has 8 divisors (see below), whose sum is σ = 1960054455744. Its totient is φ = 652290847260.

The previous prime is 1305642332503. The next prime is 1305642332509. The reversal of 1305642332506 is 6052332465031.

It is an interprime number because it is at equal distance from previous prime (1305642332503) and next prime (1305642332509).

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

It is not an unprimeable number, because it can be changed into a prime (1305642332503) 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, 265156420 + ... + 265161343.

It is an arithmetic number, because the mean of its divisors is an integer number (245006806968).

Almost surely, 2^{1305642332506} is an apocalyptic number.

1305642332506 is a deficient number, since it is larger than the sum of its proper divisors (654412123238).

1305642332506 is a wasteful number, since it uses less digits than its factorization.

1305642332506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530318996.

The product of its (nonzero) digits is 388800, while the sum is 40.

Adding to 1305642332506 its reverse (6052332465031), we get a palindrome (7357974797537).

The spelling of 1305642332506 in words is "one trillion, three hundred five billion, six hundred forty-two million, three hundred thirty-two thousand, five hundred six".