1213655567163 has 8 divisors (see below), whose sum is σ = 1742684917008. Its totient is φ = 746864964384.

The previous prime is 1213655567161. The next prime is 1213655567183. The reversal of 1213655567163 is 3617655563121.

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

It is not a de Polignac number, because 1213655567163 - 2¹ = 1213655567161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213655567161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15559686720 + ... + 15559686797.

It is an arithmetic number, because the mean of its divisors is an integer number (217835614626).

Almost surely, 2^{1213655567163} is an apocalyptic number.

1213655567163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1213655567163 is a deficient number, since it is larger than the sum of its proper divisors (529029349845).

1213655567163 is a wasteful number, since it uses less digits than its factorization.

1213655567163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31119373533.

The product of its digits is 3402000, while the sum is 51.

The spelling of 1213655567163 in words is "one trillion, two hundred thirteen billion, six hundred fifty-five million, five hundred sixty-seven thousand, one hundred sixty-three".