55640411780 has 24 divisors (see below), whose sum is σ = 117013989120. Its totient is φ = 22223950560.

The previous prime is 55640411747. The next prime is 55640411791. The reversal of 55640411780 is 8711404655.

55640411780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1999220 + ... + 2026859.

It is an arithmetic number, because the mean of its divisors is an integer number (4875582880).

Almost surely, 2^55640411780 is an apocalyptic number.

It is an amenable number.

55640411780 is an abundant number, since it is smaller than the sum of its proper divisors (61373577340).

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

55640411780 is a wasteful number, since it uses less digits than its factorization.

55640411780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4026779 (or 4026777 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 55640411780 in words is "fifty-five billion, six hundred forty million, four hundred eleven thousand, seven hundred eighty".