550656666505 has 8 divisors (see below), whose sum is σ = 720859636224. Its totient is φ = 400477575600.

The previous prime is 550656666493. The next prime is 550656666517. The reversal of 550656666505 is 505666656055.

It is an interprime number because it is at equal distance from previous prime (550656666493) and next prime (550656666517).

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

It is not a de Polignac number, because 550656666505 - 2¹¹ = 550656664457 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 10011939391 = 550656666505 / (5 + 5 + 0 + 6 + 5 + 6 + 6 + 6 + 6 + 5 + 0 + 5).

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, 5005969641 + ... + 5005969750.

It is an arithmetic number, because the mean of its divisors is an integer number (90107454528).

Almost surely, 2^550656666505 is an apocalyptic number.

550656666505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

550656666505 is a deficient number, since it is larger than the sum of its proper divisors (170202969719).

550656666505 is a wasteful number, since it uses less digits than its factorization.

550656666505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011939407.

The product of its (nonzero) digits is 24300000, while the sum is 55.

The spelling of 550656666505 in words is "five hundred fifty billion, six hundred fifty-six million, six hundred sixty-six thousand, five hundred five".