55866727617 has 8 divisors (see below), whose sum is σ = 75226485120. Its totient is φ = 36875727600.

The previous prime is 55866727571. The next prime is 55866727627. The reversal of 55866727617 is 71672766855.

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

It is not a de Polignac number, because 55866727617 - 2⁷ = 55866727489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55866727627) 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, 92189017 + ... + 92189622.

It is an arithmetic number, because the mean of its divisors is an integer number (9403310640).

Almost surely, 2^55866727617 is an apocalyptic number.

It is an amenable number.

55866727617 is a deficient number, since it is larger than the sum of its proper divisors (19359757503).

55866727617 is a wasteful number, since it uses less digits than its factorization.

55866727617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184378743.

The product of its digits is 29635200, while the sum is 60.

The spelling of 55866727617 in words is "fifty-five billion, eight hundred sixty-six million, seven hundred twenty-seven thousand, six hundred seventeen".