505255778610 has 32 divisors (see below), whose sum is σ = 1322851493952. Its totient is φ = 122486249280.

The previous prime is 505255778569. The next prime is 505255778611. The reversal of 505255778610 is 16877552505.

It is not an unprimeable number, because it can be changed into a prime (505255778611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765538729 + ... + 765539388.

It is an arithmetic number, because the mean of its divisors is an integer number (41339109186).

Almost surely, 2^505255778610 is an apocalyptic number.

505255778610 is an abundant number, since it is smaller than the sum of its proper divisors (817595715342).

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

505255778610 is a wasteful number, since it uses less digits than its factorization.

505255778610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531078138.

The product of its (nonzero) digits is 2940000, while the sum is 51.

The spelling of 505255778610 in words is "five hundred five billion, two hundred fifty-five million, seven hundred seventy-eight thousand, six hundred ten".