55665655505 has 8 divisors (see below), whose sum is σ = 66805453824. Its totient is φ = 44528079600.

The previous prime is 55665655481. The next prime is 55665655537. The reversal of 55665655505 is 50555656655.

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

It is a de Polignac number, because none of the positive numbers 2^k-55665655505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499991 + ... + 601100.

It is an arithmetic number, because the mean of its divisors is an integer number (8350681728).

Almost surely, 2^55665655505 is an apocalyptic number.

It is an amenable number.

55665655505 is a deficient number, since it is larger than the sum of its proper divisors (11139798319).

55665655505 is a wasteful number, since it uses less digits than its factorization.

55665655505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111207.

The product of its (nonzero) digits is 16875000, while the sum is 53.

The spelling of 55665655505 in words is "fifty-five billion, six hundred sixty-five million, six hundred fifty-five thousand, five hundred five".