209623275227238 has 16 divisors (see below), whose sum is σ = 419253650899776. Its totient is φ = 69873241668200.

The previous prime is 209623275227237. The next prime is 209623275227297. The reversal of 209623275227238 is 832722572326902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209623275227237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295468056 + ... + 296176667.

It is an arithmetic number, because the mean of its divisors is an integer number (26203353181236).

Almost surely, 2^{209623275227238} is an apocalyptic number.

209623275227238 is an abundant number, since it is smaller than the sum of its proper divisors (209630375672538).

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

209623275227238 is a wasteful number, since it uses less digits than its factorization.

209623275227238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591703779.

The product of its (nonzero) digits is 60963840, while the sum is 60.

The spelling of 209623275227238 in words is "two hundred nine trillion, six hundred twenty-three billion, two hundred seventy-five million, two hundred twenty-seven thousand, two hundred thirty-eight".