1231446435664 has 20 divisors (see below), whose sum is σ = 2386008290656. Its totient is φ = 615702360672.

The previous prime is 1231446435613. The next prime is 1231446435673. The reversal of 1231446435664 is 4665346441321.

It is a super-2 number, since 2×1231446435664² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810834 + ... + 1766449.

Almost surely, 2^{1231446435664} is an apocalyptic number.

It is an amenable number.

1231446435664 is a deficient number, since it is larger than the sum of its proper divisors (1154561854992).

1231446435664 is a wasteful number, since it uses less digits than its factorization.

1231446435664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607154 (or 2607148 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 49.

The spelling of 1231446435664 in words is "one trillion, two hundred thirty-one billion, four hundred forty-six million, four hundred thirty-five thousand, six hundred sixty-four".