1264135412446 has 8 divisors (see below), whose sum is σ = 1947451851720. Its totient is φ = 614984795208.

The previous prime is 1264135412389. The next prime is 1264135412447. The reversal of 1264135412446 is 6442145314621.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264135412447) 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, 8541455416 + ... + 8541455563.

It is an arithmetic number, because the mean of its divisors is an integer number (243431481465).

Almost surely, 2^{1264135412446} is an apocalyptic number.

1264135412446 is a deficient number, since it is larger than the sum of its proper divisors (683316439274).

1264135412446 is a wasteful number, since it uses less digits than its factorization.

1264135412446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17082911018.

The product of its digits is 552960, while the sum is 43.

The spelling of 1264135412446 in words is "one trillion, two hundred sixty-four billion, one hundred thirty-five million, four hundred twelve thousand, four hundred forty-six".