213305156551562 has 16 divisors (see below), whose sum is σ = 321625888798920. Its totient is φ = 106096562491392.

The previous prime is 213305156551559. The next prime is 213305156551601. The reversal of 213305156551562 is 265155651503312.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 166024281571681 + 47280874979881 = 12885041^2 + 6876109^2 .

It is a super-2 number, since 2×213305156551562² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213305156551562.

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, 3155864 + ... + 20894252.

Almost surely, 2^{213305156551562} is an apocalyptic number.

213305156551562 is a deficient number, since it is larger than the sum of its proper divisors (108320732247358).

213305156551562 is a wasteful number, since it uses less digits than its factorization.

213305156551562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17769737.

The product of its (nonzero) digits is 4050000, while the sum is 50.

The spelling of 213305156551562 in words is "two hundred thirteen trillion, three hundred five billion, one hundred fifty-six million, five hundred fifty-one thousand, five hundred sixty-two".