233556890257 has 2 divisors, whose sum is σ = 233556890258. Its totient is φ = 233556890256.

The previous prime is 233556890213. The next prime is 233556890261. The reversal of 233556890257 is 752098655332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166732572241 + 66824318016 = 408329^2 + 258504^2 .

It is a cyclic number.

It is not a de Polignac number, because 233556890257 - 2²³ = 233548501649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 233556890198 and 233556890207.

It is not a weakly prime, because it can be changed into another prime (233556896257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116778445128 + 116778445129.

It is an arithmetic number, because the mean of its divisors is an integer number (116778445129).

Almost surely, 2^233556890257 is an apocalyptic number.

It is an amenable number.

233556890257 is a deficient number, since it is larger than the sum of its proper divisors (1).

233556890257 is an equidigital number, since it uses as much as digits as its factorization.

233556890257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608000, while the sum is 55.

The spelling of 233556890257 in words is "two hundred thirty-three billion, five hundred fifty-six million, eight hundred ninety thousand, two hundred fifty-seven".