65667910123 has 2 divisors, whose sum is σ = 65667910124. Its totient is φ = 65667910122.

The previous prime is 65667910117. The next prime is 65667910207. The reversal of 65667910123 is 32101976656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65667910123 - 2¹³ = 65667901931 is a prime.

It is not a weakly prime, because it can be changed into another prime (65667910223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32833955061 + 32833955062.

It is an arithmetic number, because the mean of its divisors is an integer number (32833955062).

Almost surely, 2^65667910123 is an apocalyptic number.

65667910123 is a deficient number, since it is larger than the sum of its proper divisors (1).

65667910123 is an equidigital number, since it uses as much as digits as its factorization.

65667910123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 46.

The spelling of 65667910123 in words is "sixty-five billion, six hundred sixty-seven million, nine hundred ten thousand, one hundred twenty-three".