555667766555 has 64 divisors (see below), whose sum is σ = 759877687296. Its totient is φ = 386555520000.

The previous prime is 555667766551. The next prime is 555667766561.

It is a happy number.

555667766555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 555667766555 - 2² = 555667766551 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (555667766551) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23446922 + ... + 23470608.

It is an arithmetic number, because the mean of its divisors is an integer number (11873088864).

Almost surely, 2^555667766555 is an apocalyptic number.

555667766555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

555667766555 is a deficient number, since it is larger than the sum of its proper divisors (204209920741).

555667766555 is a wasteful number, since it uses less digits than its factorization.

555667766555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23948.

The product of its digits is 992250000, while the sum is 68.

The spelling of 555667766555 in words is "five hundred fifty-five billion, six hundred sixty-seven million, seven hundred sixty-six thousand, five hundred fifty-five".