2688578863623 has 192 divisors, whose sum is σ = 4625513856000. Its totient is φ = 1534416162048.

The previous prime is 2688578863541. The next prime is 2688578863643. The reversal of 2688578863623 is 3263688758862.

It is a happy number.

2688578863623 is a `hidden beast` number, since 26 + 8 + 8 + 578 + 8 + 6 + 3 + 6 + 23 = 666.

It is not a de Polignac number, because 2688578863623 - 2¹⁷ = 2688578732551 is a prime.

It is a super-2 number, since 2×2688578863623² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688578863643) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 755853961 + ... + 755857517.

It is an arithmetic number, because the mean of its divisors is an integer number (24091218000).

Almost surely, 2^{2688578863623} is an apocalyptic number.

2688578863623 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2688578863623 is a deficient number, since it is larger than the sum of its proper divisors (1936934992377).

2688578863623 is a wasteful number, since it uses less digits than its factorization.

2688578863623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731 (or 3678 counting only the distinct ones).

The product of its digits is 1114767360, while the sum is 72.

The spelling of 2688578863623 in words is "two trillion, six hundred eighty-eight billion, five hundred seventy-eight million, eight hundred sixty-three thousand, six hundred twenty-three".