55616560611550 has 12 divisors (see below), whose sum is σ = 103446802737576. Its totient is φ = 22246624244600.

The previous prime is 55616560611523. The next prime is 55616560611553. The reversal of 55616560611550 is 5511606561655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55616560611553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 556165606066 + ... + 556165606165.

It is an arithmetic number, because the mean of its divisors is an integer number (8620566894798).

Almost surely, 2^{55616560611550} is an apocalyptic number.

55616560611550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55616560611550 is a deficient number, since it is larger than the sum of its proper divisors (47830242126026).

55616560611550 is a wasteful number, since it uses less digits than its factorization.

55616560611550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112331212243 (or 1112331212238 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 52.

The spelling of 55616560611550 in words is "fifty-five trillion, six hundred sixteen billion, five hundred sixty million, six hundred eleven thousand, five hundred fifty".