55683638655 has 32 divisors (see below), whose sum is σ = 90009239040. Its totient is φ = 29393020800.

The previous prime is 55683638651. The next prime is 55683638657.

55683638655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55683638655 - 2² = 55683638651 is a prime.

It is a super-2 number, since 2×55683638655² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55683638651) 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, 5629344 + ... + 5639226.

It is an arithmetic number, because the mean of its divisors is an integer number (2812788720).

Almost surely, 2^55683638655 is an apocalyptic number.

55683638655 is a deficient number, since it is larger than the sum of its proper divisors (34325600385).

55683638655 is a wasteful number, since it uses less digits than its factorization.

55683638655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13711.

The product of its digits is 77760000, while the sum is 60.

The spelling of 55683638655 in words is "fifty-five billion, six hundred eighty-three million, six hundred thirty-eight thousand, six hundred fifty-five".