55665198623 has 8 divisors (see below), whose sum is σ = 55789933056. Its totient is φ = 55540560600.

The previous prime is 55665198559. The next prime is 55665198649. The reversal of 55665198623 is 32689156655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55665198623 - 2⁶ = 55665198559 is a prime.

It is a super-2 number, since 2×55665198623² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665998623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200908 + ... + 1246398.

It is an arithmetic number, because the mean of its divisors is an integer number (6973741632).

Almost surely, 2^55665198623 is an apocalyptic number.

55665198623 is a deficient number, since it is larger than the sum of its proper divisors (124734433).

55665198623 is a wasteful number, since it uses less digits than its factorization.

55665198623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48205.

The product of its digits is 11664000, while the sum is 56.

The spelling of 55665198623 in words is "fifty-five billion, six hundred sixty-five million, one hundred ninety-eight thousand, six hundred twenty-three".