55555004799985 has 8 divisors (see below), whose sum is σ = 66837383669160. Its totient is φ = 44329751900544.

The previous prime is 55555004799929. The next prime is 55555004799997. The reversal of 55555004799985 is 58999740055555.

It can be written as a sum of positive squares in 4 ways, for example, as 6791361088576 + 48763643711409 = 2606024^2 + 6983097^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55555004799985 - 2¹⁷ = 55555004668913 is a prime.

It is a super-4 number, since 4×55555004799985⁴ (a number of 56 digits) contains 4444 as substring.

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, 14281490292 + ... + 14281494181.

It is an arithmetic number, because the mean of its divisors is an integer number (8354672958645).

Almost surely, 2^{55555004799985} is an apocalyptic number.

It is an amenable number.

55555004799985 is a deficient number, since it is larger than the sum of its proper divisors (11282378869175).

55555004799985 is a wasteful number, since it uses less digits than its factorization.

55555004799985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28562984867.

The product of its (nonzero) digits is 2551500000, while the sum is 76.

The spelling of 55555004799985 in words is "fifty-five trillion, five hundred fifty-five billion, four million, seven hundred ninety-nine thousand, nine hundred eighty-five".