505030211988 has 24 divisors (see below), whose sum is σ = 1178442729408. Its totient is φ = 168337846656.

The previous prime is 505030211981. The next prime is 505030212019. The reversal of 505030211988 is 889112030505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505030211981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307381 + ... + 1050972.

It is an arithmetic number, because the mean of its divisors is an integer number (49101780392).

Almost surely, 2^505030211988 is an apocalyptic number.

It is an amenable number.

505030211988 is an abundant number, since it is smaller than the sum of its proper divisors (673412517420).

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

505030211988 is a wasteful number, since it uses less digits than its factorization.

505030211988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389343 (or 1389341 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 505030211988 in words is "five hundred five billion, thirty million, two hundred eleven thousand, nine hundred eighty-eight".