211620506116552 has 32 divisors (see below), whose sum is σ = 427312696177080. Its totient is φ = 97670532234240.

The previous prime is 211620506116541. The next prime is 211620506116561. The reversal of 211620506116552 is 255611605026112.

It can be written as a sum of positive squares in 4 ways, for example, as 208970558402596 + 2649947713956 = 14455814^2 + 1627866^2 .

It is a junction number, because it is equal to n+sod(n) for n = 211620506116499 and 211620506116508.

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, 17266768 + ... + 26858560.

Almost surely, 2^{211620506116552} is an apocalyptic number.

It is an amenable number.

211620506116552 is an abundant number, since it is smaller than the sum of its proper divisors (215692190060528).

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

211620506116552 is a wasteful number, since it uses less digits than its factorization.

211620506116552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9803953 (or 9803949 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 211620506116552 in words is "two hundred eleven trillion, six hundred twenty billion, five hundred six million, one hundred sixteen thousand, five hundred fifty-two".