505638665662 has 16 divisors (see below), whose sum is σ = 836722896912. Its totient is φ = 227679698880.

The previous prime is 505638665659. The next prime is 505638665689. The reversal of 505638665662 is 266566836505.

It is a junction number, because it is equal to n+sod(n) for n = 505638665597 and 505638665606.

It is a congruent number.

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, 237165288 + ... + 237167419.

It is an arithmetic number, because the mean of its divisors is an integer number (52295181057).

Almost surely, 2^505638665662 is an apocalyptic number.

505638665662 is a deficient number, since it is larger than the sum of its proper divisors (331084231250).

505638665662 is a wasteful number, since it uses less digits than its factorization.

505638665662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474332763.

The product of its (nonzero) digits is 46656000, while the sum is 58.

The spelling of 505638665662 in words is "five hundred five billion, six hundred thirty-eight million, six hundred sixty-five thousand, six hundred sixty-two".