55529697607680 has 256 divisors, whose sum is σ = 182026346040000. Its totient is φ = 14446745354240.

The previous prime is 55529697607679. The next prime is 55529697607711. The reversal of 55529697607680 is 8670679692555.

It is a tau number, because it is divible by the number of its divisors (256).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18774571 + ... + 21530069.

Almost surely, 2^{55529697607680} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55529697607680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91013173020000).

55529697607680 is an abundant number, since it is smaller than the sum of its proper divisors (126496648432320).

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

55529697607680 is an equidigital number, since it uses as much as digits as its factorization.

55529697607680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755578 (or 2755550 counting only the distinct ones).

The product of its (nonzero) digits is 1714608000, while the sum is 75.

The spelling of 55529697607680 in words is "fifty-five trillion, five hundred twenty-nine billion, six hundred ninety-seven million, six hundred seven thousand, six hundred eighty".