1478226769663 has 4 divisors (see below), whose sum is σ = 1689402022480. Its totient is φ = 1267051516848.

The previous prime is 1478226769633. The next prime is 1478226769681. The reversal of 1478226769663 is 3669676228741.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1478226769663 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 (1478226769633) 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, 105587626398 + ... + 105587626411.

It is an arithmetic number, because the mean of its divisors is an integer number (422350505620).

Almost surely, 2^{1478226769663} is an apocalyptic number.

1478226769663 is a deficient number, since it is larger than the sum of its proper divisors (211175252817).

1478226769663 is an equidigital number, since it uses as much as digits as its factorization.

1478226769663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211175252816.

The product of its digits is 219469824, while the sum is 67.

The spelling of 1478226769663 in words is "one trillion, four hundred seventy-eight billion, two hundred twenty-six million, seven hundred sixty-nine thousand, six hundred sixty-three".