123680263690 has 8 divisors (see below), whose sum is σ = 222624474660. Its totient is φ = 49472105472.

The previous prime is 123680263669. The next prime is 123680263709. The reversal of 123680263690 is 96362086321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 102600417969 + 21079845721 = 320313^2 + 145189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×123680263690² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123680263690.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 6184013175 + ... + 6184013194.

Almost surely, 2^123680263690 is an apocalyptic number.

123680263690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123680263690 is a deficient number, since it is larger than the sum of its proper divisors (98944210970).

123680263690 is a wasteful number, since it uses less digits than its factorization.

123680263690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12368026376.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 123680263690 in words is "one hundred twenty-three billion, six hundred eighty million, two hundred sixty-three thousand, six hundred ninety".