209538622152 has 48 divisors (see below), whose sum is σ = 585806906880. Its totient is φ = 67593103200.

The previous prime is 209538622091. The next prime is 209538622187. The reversal of 209538622152 is 251226835902.

209538622152 is a `hidden beast` number, since 2 + 0 + 9 + 5 + 3 + 8 + 622 + 15 + 2 = 666.

It is a super-2 number, since 2×209538622152² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 209538622098 and 209538622107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46937424 + ... + 46941887.

It is an arithmetic number, because the mean of its divisors is an integer number (12204310560).

Almost surely, 2^209538622152 is an apocalyptic number.

It is an amenable number.

209538622152 is an abundant number, since it is smaller than the sum of its proper divisors (376268284728).

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

209538622152 is a wasteful number, since it uses less digits than its factorization.

209538622152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93879354 (or 93879347 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 209538622152 in words is "two hundred nine billion, five hundred thirty-eight million, six hundred twenty-two thousand, one hundred fifty-two".