55667876656 has 40 divisors (see below), whose sum is σ = 123352417440. Its totient is φ = 23840661504.

The previous prime is 55667876573. The next prime is 55667876657. The reversal of 55667876656 is 65667876655.

It is a junction number, because it is equal to n+sod(n) for n = 55667876591 and 55667876600.

It is not an unprimeable number, because it can be changed into a prime (55667876657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18571 + ... + 334186.

It is an arithmetic number, because the mean of its divisors is an integer number (3083810436).

Almost surely, 2^55667876656 is an apocalyptic number.

55667876656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55667876656 is an abundant number, since it is smaller than the sum of its proper divisors (67684540784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55667876656 is a wasteful number, since it uses less digits than its factorization.

55667876656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354181 (or 354175 counting only the distinct ones).

The product of its digits is 381024000, while the sum is 67.

Subtracting 55667876656 from its reverse (65667876655), we obtain a palindrome (9999999999).

The spelling of 55667876656 in words is "fifty-five billion, six hundred sixty-seven million, eight hundred seventy-six thousand, six hundred fifty-six".