505212155530 has 16 divisors (see below), whose sum is σ = 962874932040. Its totient is φ = 190197517312.

The previous prime is 505212155527. The next prime is 505212155549. The reversal of 505212155530 is 35551212505.

It can be written as a sum of positive squares in 4 ways, for example, as 309495280329 + 195716875201 = 556323^2 + 442399^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1485917935 + ... + 1485918274.

Almost surely, 2^505212155530 is an apocalyptic number.

505212155530 is a deficient number, since it is larger than the sum of its proper divisors (457662776510).

505212155530 is a wasteful number, since it uses less digits than its factorization.

505212155530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971836233.

The product of its (nonzero) digits is 37500, while the sum is 34.

The spelling of 505212155530 in words is "five hundred five billion, two hundred twelve million, one hundred fifty-five thousand, five hundred thirty".