502642251655 has 4 divisors (see below), whose sum is σ = 603170701992. Its totient is φ = 402113801320.

The previous prime is 502642251589. The next prime is 502642251679. The reversal of 502642251655 is 556152246205.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 502642251655 - 2¹¹ = 502642249607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50264225161 + ... + 50264225170.

It is an arithmetic number, because the mean of its divisors is an integer number (150792675498).

Almost surely, 2^502642251655 is an apocalyptic number.

502642251655 is a deficient number, since it is larger than the sum of its proper divisors (100528450337).

502642251655 is a wasteful number, since it uses less digits than its factorization.

502642251655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100528450336.

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 502642251655 in words is "five hundred two billion, six hundred forty-two million, two hundred fifty-one thousand, six hundred fifty-five".