665000556055 has 16 divisors (see below), whose sum is σ = 872290800000. Its totient is φ = 482667536160.

The previous prime is 665000555993. The next prime is 665000556061. The reversal of 665000556055 is 550655000566.

It is not a de Polignac number, because 665000556055 - 2¹¹ = 665000554007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12087705 + ... + 12142594.

It is an arithmetic number, because the mean of its divisors is an integer number (54518175000).

Almost surely, 2^665000556055 is an apocalyptic number.

665000556055 is a deficient number, since it is larger than the sum of its proper divisors (207290243945).

665000556055 is a wasteful number, since it uses less digits than its factorization.

665000556055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24230814.

The product of its (nonzero) digits is 675000, while the sum is 43.

The spelling of 665000556055 in words is "six hundred sixty-five billion, five hundred fifty-six thousand, fifty-five".