208458628123 has 2 divisors, whose sum is σ = 208458628124. Its totient is φ = 208458628122.

The previous prime is 208458628109. The next prime is 208458628127. The reversal of 208458628123 is 321826854802.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208458628123 - 2¹³ = 208458619931 is a prime.

It is not a weakly prime, because it can be changed into another prime (208458628127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104229314061 + 104229314062.

It is an arithmetic number, because the mean of its divisors is an integer number (104229314062).

Almost surely, 2^208458628123 is an apocalyptic number.

208458628123 is a deficient number, since it is larger than the sum of its proper divisors (1).

208458628123 is an equidigital number, since it uses as much as digits as its factorization.

208458628123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1474560, while the sum is 49.

The spelling of 208458628123 in words is "two hundred eight billion, four hundred fifty-eight million, six hundred twenty-eight thousand, one hundred twenty-three".