55553137066605 has 128 divisors (see below), whose sum is σ = 96366730936320. Its totient is φ = 27238321474560.

The previous prime is 55553137066589. The next prime is 55553137066631. The reversal of 55553137066605 is 50666073135555.

It is a happy number.

It is not a de Polignac number, because 55553137066605 - 2⁴ = 55553137066589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2961718887 + ... + 2961737643.

It is an arithmetic number, because the mean of its divisors is an integer number (752865085440).

Almost surely, 2^{55553137066605} is an apocalyptic number.

It is an amenable number.

55553137066605 is a deficient number, since it is larger than the sum of its proper divisors (40813593869715).

55553137066605 is a wasteful number, since it uses less digits than its factorization.

55553137066605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20699.

The product of its (nonzero) digits is 42525000, while the sum is 57.

The spelling of 55553137066605 in words is "fifty-five trillion, five hundred fifty-three billion, one hundred thirty-seven million, sixty-six thousand, six hundred five".