209524232404 has 12 divisors (see below), whose sum is σ = 376577336884. Its totient is φ = 101930707584.

The previous prime is 209524232369. The next prime is 209524232419. The reversal of 209524232404 is 404232425902.

It can be written as a sum of positive squares in 2 ways, for example, as 196160410000 + 13363822404 = 442900^2 + 115602^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

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, 707851989 + ... + 707852284.

Almost surely, 2^209524232404 is an apocalyptic number.

It is an amenable number.

209524232404 is a deficient number, since it is larger than the sum of its proper divisors (167053104480).

209524232404 is a wasteful number, since it uses less digits than its factorization.

209524232404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415704314 (or 1415704312 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 209524232404 in words is "two hundred nine billion, five hundred twenty-four million, two hundred thirty-two thousand, four hundred four".