123216610563 has 96 divisors (see below), whose sum is σ = 194363000832. Its totient is φ = 77906188800.

The previous prime is 123216610507. The next prime is 123216610567. The reversal of 123216610563 is 365016612321.

123216610563 is a `hidden beast` number, since 1 + 2 + 3 + 21 + 66 + 10 + 563 = 666.

It is not a de Polignac number, because 123216610563 - 2¹² = 123216606467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123216610567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 121634845 + ... + 121635857.

It is an arithmetic number, because the mean of its divisors is an integer number (2024614592).

Almost surely, 2^123216610563 is an apocalyptic number.

123216610563 is a deficient number, since it is larger than the sum of its proper divisors (71146390269).

123216610563 is a wasteful number, since it uses less digits than its factorization.

123216610563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1355 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 123216610563 in words is "one hundred twenty-three billion, two hundred sixteen million, six hundred ten thousand, five hundred sixty-three".