655155525777 has 8 divisors (see below), whose sum is σ = 877930353600. Its totient is φ = 434575524240.

The previous prime is 655155525749. The next prime is 655155525793. The reversal of 655155525777 is 777525551556.

It is a happy number.

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

It is not a de Polignac number, because 655155525777 - 2¹⁰ = 655155524753 is a prime.

It is a super-2 number, since 2×655155525777² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 655155525777.

It is not an unprimeable number, because it can be changed into a prime (655155525707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548705874 + ... + 548707067.

It is an arithmetic number, because the mean of its divisors is an integer number (109741294200).

Almost surely, 2^655155525777 is an apocalyptic number.

It is an amenable number.

655155525777 is a deficient number, since it is larger than the sum of its proper divisors (222774827823).

655155525777 is a wasteful number, since it uses less digits than its factorization.

655155525777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097413143.

The product of its digits is 64312500, while the sum is 60.

The spelling of 655155525777 in words is "six hundred fifty-five billion, one hundred fifty-five million, five hundred twenty-five thousand, seven hundred seventy-seven".