30505205777252 has 12 divisors (see below), whose sum is σ = 53414151827820. Its totient is φ = 15244019540736.

The previous prime is 30505205777227. The next prime is 30505205777261. The reversal of 30505205777252 is 25277750250503.

It can be written as a sum of positive squares in 2 ways, for example, as 21518316998656 + 8986888778596 = 4638784^2 + 2997814^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30505205777252.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2145828977 + ... + 2145843192.

It is an arithmetic number, because the mean of its divisors is an integer number (4451179318985).

Almost surely, 2^{30505205777252} is an apocalyptic number.

It is an amenable number.

30505205777252 is a deficient number, since it is larger than the sum of its proper divisors (22908946050568).

30505205777252 is a wasteful number, since it uses less digits than its factorization.

30505205777252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291673950 (or 4291673948 counting only the distinct ones).

The product of its (nonzero) digits is 5145000, while the sum is 50.

The spelling of 30505205777252 in words is "thirty trillion, five hundred five billion, two hundred five million, seven hundred seventy-seven thousand, two hundred fifty-two".