55805578586 has 8 divisors (see below), whose sum is σ = 83716073940. Its totient is φ = 27900220608.

The previous prime is 55805578583. The next prime is 55805578589. The reversal of 55805578586 is 68587550855.

It is an interprime number because it is at equal distance from previous prime (55805578583) and next prime (55805578589).

It can be written as a sum of positive squares in 2 ways, for example, as 49002463225 + 6803115361 = 221365^2 + 82481^2 .

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

It is a super-2 number, since 2×55805578586² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55805578583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257071 + ... + 1300706.

Almost surely, 2^55805578586 is an apocalyptic number.

55805578586 is a deficient number, since it is larger than the sum of its proper divisors (27910495354).

55805578586 is a wasteful number, since it uses less digits than its factorization.

55805578586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568688.

The product of its (nonzero) digits is 67200000, while the sum is 62.

The spelling of 55805578586 in words is "fifty-five billion, eight hundred five million, five hundred seventy-eight thousand, five hundred eighty-six".