5555557777698 has 56 divisors (see below), whose sum is σ = 12784854419568. Its totient is φ = 1808786232792.

The previous prime is 5555557777697. The next prime is 5555557777699. The reversal of 5555557777698 is 8967777555555.

5555557777698 is a `hidden beast` number, since 5 + 5 + 55 + 557 + 7 + 7 + 7 + 6 + 9 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (5555557777697) and next prime (5555557777699).

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (5555557777697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 44244240 + ... + 44369627.

It is an arithmetic number, because the mean of its divisors is an integer number (228300971778).

Almost surely, 2^{5555557777698} is an apocalyptic number.

5555557777698 is an abundant number, since it is smaller than the sum of its proper divisors (7229296641870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5555557777698 is an equidigital number, since it uses as much as digits as its factorization.

5555557777698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88613930 (or 88613915 counting only the distinct ones).

The product of its digits is 16206750000, while the sum is 81.

The spelling of 5555557777698 in words is "five trillion, five hundred fifty-five billion, five hundred fifty-seven million, seven hundred seventy-seven thousand, six hundred ninety-eight".