234616156721 has 2 divisors, whose sum is σ = 234616156722. Its totient is φ = 234616156720.

The previous prime is 234616156717. The next prime is 234616156793. The reversal of 234616156721 is 127651616432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230629497121 + 3986659600 = 480239^2 + 63140^2 .

It is a cyclic number.

It is not a de Polignac number, because 234616156721 - 2² = 234616156717 is a prime.

It is not a weakly prime, because it can be changed into another prime (234610156721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117308078360 + 117308078361.

It is an arithmetic number, because the mean of its divisors is an integer number (117308078361).

Almost surely, 2^234616156721 is an apocalyptic number.

It is an amenable number.

234616156721 is a deficient number, since it is larger than the sum of its proper divisors (1).

234616156721 is an equidigital number, since it uses as much as digits as its factorization.

234616156721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The spelling of 234616156721 in words is "two hundred thirty-four billion, six hundred sixteen million, one hundred fifty-six thousand, seven hundred twenty-one".