55605655605501 has 12 divisors (see below), whose sum is σ = 80320166569500. Its totient is φ = 37070028031680.

The previous prime is 55605655605427. The next prime is 55605655605553. The reversal of 55605655605501 is 10550655650655.

It can be written as a sum of positive squares in 2 ways, for example, as 35349850189476 + 20255805416025 = 5945574^2 + 4500645^2 .

It is not a de Polignac number, because 55605655605501 - 2¹⁷ = 55605655474429 is a prime.

It is a super-2 number, since 2×55605655605501² (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 (55605655605301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33224440 + ... + 34857921.

It is an arithmetic number, because the mean of its divisors is an integer number (6693347214125).

Almost surely, 2^{55605655605501} is an apocalyptic number.

It is an amenable number.

55605655605501 is a deficient number, since it is larger than the sum of its proper divisors (24714510963999).

55605655605501 is a wasteful number, since it uses less digits than its factorization.

55605655605501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68173116 (or 68173113 counting only the distinct ones).

The product of its (nonzero) digits is 16875000, while the sum is 54.

The spelling of 55605655605501 in words is "fifty-five trillion, six hundred five billion, six hundred fifty-five million, six hundred five thousand, five hundred one".