1463644256291 has 16 divisors (see below), whose sum is σ = 1677483956160. Its totient is φ = 1250996503680.

The previous prime is 1463644256279. The next prime is 1463644256297. The reversal of 1463644256291 is 1926524463641.

It is not a de Polignac number, because 1463644256291 - 2¹⁴ = 1463644239907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1463644256297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3293705 + ... + 3711573.

It is an arithmetic number, because the mean of its divisors is an integer number (104842747260).

Almost surely, 2^{1463644256291} is an apocalyptic number.

1463644256291 is a deficient number, since it is larger than the sum of its proper divisors (213839699869).

1463644256291 is an equidigital number, since it uses as much as digits as its factorization.

1463644256291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419294.

The product of its digits is 7464960, while the sum is 53.

The spelling of 1463644256291 in words is "one trillion, four hundred sixty-three billion, six hundred forty-four million, two hundred fifty-six thousand, two hundred ninety-one".