500538778388 has 24 divisors (see below), whose sum is σ = 955829915040. Its totient is φ = 227456701920.

The previous prime is 500538778387. The next prime is 500538778391. The reversal of 500538778388 is 883877835005.

It is a self number, because there is not a number n which added to its sum of digits gives 500538778388.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500538778387) 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 7 ways as a sum of consecutive naturals, for example, 1356731 + ... + 1685762.

It is an arithmetic number, because the mean of its divisors is an integer number (39826246460).

Almost surely, 2^500538778388 is an apocalyptic number.

It is an amenable number.

500538778388 is a deficient number, since it is larger than the sum of its proper divisors (455291136652).

500538778388 is a wasteful number, since it uses less digits than its factorization.

500538778388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046247 (or 3046245 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 500538778388 in words is "five hundred billion, five hundred thirty-eight million, seven hundred seventy-eight thousand, three hundred eighty-eight".