102345999989 has 2 divisors, whose sum is σ = 102345999990. Its totient is φ = 102345999988.

The previous prime is 102345999967. The next prime is 102346000037. The reversal of 102345999989 is 989999543201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54448488964 + 47897511025 = 233342^2 + 218855^2 .

It is a cyclic number.

It is not a de Polignac number, because 102345999989 - 2²⁰ = 102344951413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102345993989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51172999994 + 51172999995.

It is an arithmetic number, because the mean of its divisors is an integer number (51172999995).

Almost surely, 2^102345999989 is an apocalyptic number.

It is an amenable number.

102345999989 is a deficient number, since it is larger than the sum of its proper divisors (1).

102345999989 is an equidigital number, since it uses as much as digits as its factorization.

102345999989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56687040, while the sum is 68.

The spelling of 102345999989 in words is "one hundred two billion, three hundred forty-five million, nine hundred ninety-nine thousand, nine hundred eighty-nine".