505212640998 has 32 divisors (see below), whose sum is σ = 1113456132096. Its totient is φ = 151834925088.

The previous prime is 505212640997. The next prime is 505212641047. The reversal of 505212640998 is 899046212505.

It is a self number, because there is not a number n which added to its sum of digits gives 505212640998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505212640997) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 75311590 + ... + 75318297.

It is an arithmetic number, because the mean of its divisors is an integer number (34795504128).

Almost surely, 2^505212640998 is an apocalyptic number.

505212640998 is an abundant number, since it is smaller than the sum of its proper divisors (608243491098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505212640998 is a wasteful number, since it uses less digits than its factorization.

505212640998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150629948.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 505212640998 in words is "five hundred five billion, two hundred twelve million, six hundred forty thousand, nine hundred ninety-eight".