1213644456463 has 8 divisors (see below), whose sum is σ = 1280640952800. Its totient is φ = 1147833739008.

The previous prime is 1213644456449. The next prime is 1213644456467. The reversal of 1213644456463 is 3646544463121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213644456463 - 2¹³ = 1213644448271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213644456467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296442618 + ... + 296446711.

It is an arithmetic number, because the mean of its divisors is an integer number (160080119100).

Almost surely, 2^{1213644456463} is an apocalyptic number.

1213644456463 is a deficient number, since it is larger than the sum of its proper divisors (66996496337).

1213644456463 is an equidigital number, since it uses as much as digits as its factorization.

1213644456463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592889441.

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

The spelling of 1213644456463 in words is "one trillion, two hundred thirteen billion, six hundred forty-four million, four hundred fifty-six thousand, four hundred sixty-three".