102643357123 has 2 divisors, whose sum is σ = 102643357124. Its totient is φ = 102643357122.

The previous prime is 102643357093. The next prime is 102643357133. The reversal of 102643357123 is 321753346201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102643357123 - 2¹⁷ = 102643226051 is a prime.

It is a super-2 number, since 2×102643357123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102643357133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51321678561 + 51321678562.

It is an arithmetic number, because the mean of its divisors is an integer number (51321678562).

Almost surely, 2^102643357123 is an apocalyptic number.

102643357123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102643357123 is an equidigital number, since it uses as much as digits as its factorization.

102643357123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 102643357123 in words is "one hundred two billion, six hundred forty-three million, three hundred fifty-seven thousand, one hundred twenty-three".