123690961219 has 6 divisors (see below), whose sum is σ = 143885403924. Its totient is φ = 106020823860.

The previous prime is 123690961189. The next prime is 123690961349. The reversal of 123690961219 is 912169096321.

It is not a de Polignac number, because 123690961219 - 2⁹ = 123690960707 is a prime.

It is a super-3 number, since 3×123690961219³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 2524305331 = 123690961219 / (1 + 2 + 3 + 6 + 9 + 0 + 9 + 6 + 1 + 2 + 1 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123690961519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1262152617 + ... + 1262152714.

It is an arithmetic number, because the mean of its divisors is an integer number (23980900654).

Almost surely, 2^123690961219 is an apocalyptic number.

123690961219 is a deficient number, since it is larger than the sum of its proper divisors (20194442705).

123690961219 is an equidigital number, since it uses as much as digits as its factorization.

123690961219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524305345 (or 2524305338 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 49.

The spelling of 123690961219 in words is "one hundred twenty-three billion, six hundred ninety million, nine hundred sixty-one thousand, two hundred nineteen".