2111644220463 has 24 divisors (see below), whose sum is σ = 3292518733920. Its totient is φ = 1300122774720.

The previous prime is 2111644220459. The next prime is 2111644220467. The reversal of 2111644220463 is 3640224461112.

2111644220463 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 6 + 442 + 204 + 6 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (2111644220459) and next prime (2111644220467).

It is not a de Polignac number, because 2111644220463 - 2² = 2111644220459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111644220467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175876408 + ... + 175888413.

It is an arithmetic number, because the mean of its divisors is an integer number (137188280580).

Almost surely, 2^{2111644220463} is an apocalyptic number.

2111644220463 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2111644220463 is a deficient number, since it is larger than the sum of its proper divisors (1180874513457).

2111644220463 is a wasteful number, since it uses less digits than its factorization.

2111644220463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351764879 (or 351764876 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

Adding to 2111644220463 its reverse (3640224461112), we get a palindrome (5751868681575).

The spelling of 2111644220463 in words is "two trillion, one hundred eleven billion, six hundred forty-four million, two hundred twenty thousand, four hundred sixty-three".