1351246465666 has 8 divisors (see below), whose sum is σ = 2026899498060. Its totient is φ = 675613299648.

The previous prime is 1351246465663. The next prime is 1351246465691. The reversal of 1351246465666 is 6665646421531.

It can be written as a sum of positive squares in 2 ways, for example, as 1268954937441 + 82291528225 = 1126479^2 + 286865^2 .

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 (1351246465663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4795371 + ... + 5069326.

Almost surely, 2^{1351246465666} is an apocalyptic number.

1351246465666 is a deficient number, since it is larger than the sum of its proper divisors (675653032394).

1351246465666 is an equidigital number, since it uses as much as digits as its factorization.

1351246465666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9933188.

The product of its digits is 18662400, while the sum is 55.

The spelling of 1351246465666 in words is "one trillion, three hundred fifty-one billion, two hundred forty-six million, four hundred sixty-five thousand, six hundred sixty-six".