123373509769 has 2 divisors, whose sum is σ = 123373509770. Its totient is φ = 123373509768.

The previous prime is 123373509751. The next prime is 123373509821. The reversal of 123373509769 is 967905373321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93658645369 + 29714864400 = 306037^2 + 172380^2 .

It is a cyclic number.

It is not a de Polignac number, because 123373509769 - 2¹³ = 123373501577 is a prime.

It is a super-2 number, since 2×123373509769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123373509739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61686754884 + 61686754885.

It is an arithmetic number, because the mean of its divisors is an integer number (61686754885).

Almost surely, 2^123373509769 is an apocalyptic number.

It is an amenable number.

123373509769 is a deficient number, since it is larger than the sum of its proper divisors (1).

123373509769 is an equidigital number, since it uses as much as digits as its factorization.

123373509769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6429780, while the sum is 55.

The spelling of 123373509769 in words is "one hundred twenty-three billion, three hundred seventy-three million, five hundred nine thousand, seven hundred sixty-nine".