500661315655 has 8 divisors (see below), whose sum is σ = 600885637200. Its totient is φ = 400467680256.

The previous prime is 500661315619. The next prime is 500661315683. The reversal of 500661315655 is 556513166005.

It is a happy number.

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 500661315655 - 2²¹ = 500659218503 is a prime.

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, 7635625 + ... + 7700914.

It is an arithmetic number, because the mean of its divisors is an integer number (75110704650).

Almost surely, 2^500661315655 is an apocalyptic number.

500661315655 is a deficient number, since it is larger than the sum of its proper divisors (100224321545).

500661315655 is a wasteful number, since it uses less digits than its factorization.

500661315655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15343073.

The product of its (nonzero) digits is 405000, while the sum is 43.

The spelling of 500661315655 in words is "five hundred billion, six hundred sixty-one million, three hundred fifteen thousand, six hundred fifty-five".