2163451623655 has 16 divisors (see below), whose sum is σ = 3141549921600. Its totient is φ = 1396244408832.

The previous prime is 2163451623649. The next prime is 2163451623661. The reversal of 2163451623655 is 5563261543612.

It is an interprime number because it is at equal distance from previous prime (2163451623649) and next prime (2163451623661).

It is not a de Polignac number, because 2163451623655 - 2¹³ = 2163451615463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2163451623599 and 2163451623608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1818025980 + ... + 1818027169.

It is an arithmetic number, because the mean of its divisors is an integer number (196346870100).

Almost surely, 2^{2163451623655} is an apocalyptic number.

2163451623655 is a deficient number, since it is larger than the sum of its proper divisors (978098297945).

2163451623655 is a wasteful number, since it uses less digits than its factorization.

2163451623655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636053178.

The product of its digits is 3888000, while the sum is 49.

The spelling of 2163451623655 in words is "two trillion, one hundred sixty-three billion, four hundred fifty-one million, six hundred twenty-three thousand, six hundred fifty-five".