16140622261 has 2 divisors, whose sum is σ = 16140622262. Its totient is φ = 16140622260.

The previous prime is 16140622237. The next prime is 16140622291. The reversal of 16140622261 is 16222604161.

It is a happy number.

16140622261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10133442225 + 6007180036 = 100665^2 + 77506^2 .

It is a cyclic number.

It is not a de Polignac number, because 16140622261 - 2⁵ = 16140622229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16140622291) 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, 8070311130 + 8070311131.

It is an arithmetic number, because the mean of its divisors is an integer number (8070311131).

Almost surely, 2^16140622261 is an apocalyptic number.

It is an amenable number.

16140622261 is a deficient number, since it is larger than the sum of its proper divisors (1).

16140622261 is an equidigital number, since it uses as much as digits as its factorization.

16140622261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

It can be divided in two parts, 16140 and 622261, that added together give a square (638401 = 799²).

The spelling of 16140622261 in words is "sixteen billion, one hundred forty million, six hundred twenty-two thousand, two hundred sixty-one".