232009073557 has 2 divisors, whose sum is σ = 232009073558. Its totient is φ = 232009073556.

The previous prime is 232009073539. The next prime is 232009073563. The reversal of 232009073557 is 755370900232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160263308241 + 71745765316 = 400329^2 + 267854^2 .

It is a cyclic number.

It is not a de Polignac number, because 232009073557 - 2¹¹ = 232009071509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232009073957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116004536778 + 116004536779.

It is an arithmetic number, because the mean of its divisors is an integer number (116004536779).

Almost surely, 2^232009073557 is an apocalyptic number.

It is an amenable number.

232009073557 is a deficient number, since it is larger than the sum of its proper divisors (1).

232009073557 is an equidigital number, since it uses as much as digits as its factorization.

232009073557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 396900, while the sum is 43.

Adding to 232009073557 its reverse (755370900232), we get a palindrome (987379973789).

The spelling of 232009073557 in words is "two hundred thirty-two billion, nine million, seventy-three thousand, five hundred fifty-seven".