55606065711621 has 32 divisors (see below), whose sum is σ = 74937127587840. Its totient is φ = 36675062926656.

The previous prime is 55606065711517. The next prime is 55606065711629. The reversal of 55606065711621 is 12611756060655.

It is not a de Polignac number, because 55606065711621 - 2¹⁰ = 55606065710597 is a prime.

It is a super-2 number, since 2×55606065711621² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55606065711629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 335728990 + ... + 335894576.

It is an arithmetic number, because the mean of its divisors is an integer number (2341785237120).

Almost surely, 2^{55606065711621} is an apocalyptic number.

It is an amenable number.

55606065711621 is a deficient number, since it is larger than the sum of its proper divisors (19331061876219).

55606065711621 is a wasteful number, since it uses less digits than its factorization.

55606065711621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168913.

The product of its (nonzero) digits is 2268000, while the sum is 51.

The spelling of 55606065711621 in words is "fifty-five trillion, six hundred six billion, sixty-five million, seven hundred eleven thousand, six hundred twenty-one".