234612564521 has 2 divisors, whose sum is σ = 234612564522. Its totient is φ = 234612564520.

The previous prime is 234612564497. The next prime is 234612564523. The reversal of 234612564521 is 125465216432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225283129600 + 9329434921 = 474640^2 + 96589^2 .

It is a cyclic number.

It is not a de Polignac number, because 234612564521 - 2⁶ = 234612564457 is a prime.

It is a super-2 number, since 2×234612564521² (a number of 24 digits) contains 22 as substring.

Together with 234612564523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (234612564523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117306282260 + 117306282261.

It is an arithmetic number, because the mean of its divisors is an integer number (117306282261).

Almost surely, 2^234612564521 is an apocalyptic number.

It is an amenable number.

234612564521 is a deficient number, since it is larger than the sum of its proper divisors (1).

234612564521 is an equidigital number, since it uses as much as digits as its factorization.

234612564521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 41.

The spelling of 234612564521 in words is "two hundred thirty-four billion, six hundred twelve million, five hundred sixty-four thousand, five hundred twenty-one".