12126617777770 has 8 divisors (see below), whose sum is σ = 21827912000004. Its totient is φ = 4850647111104.

The previous prime is 12126617777759. The next prime is 12126617777773. The reversal of 12126617777770 is 7777771662121.

It can be written as a sum of positive squares in 2 ways, for example, as 11726919442681 + 399698335089 = 3424459^2 + 632217^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12126617777699 and 12126617777708.

It is not an unprimeable number, because it can be changed into a prime (12126617777773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606330888879 + ... + 606330888898.

Almost surely, 2^{12126617777770} is an apocalyptic number.

12126617777770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12126617777770 is a deficient number, since it is larger than the sum of its proper divisors (9701294222234).

12126617777770 is a wasteful number, since it uses less digits than its factorization.

12126617777770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212661777784.

The product of its (nonzero) digits is 16941456, while the sum is 61.

The spelling of 12126617777770 in words is "twelve trillion, one hundred twenty-six billion, six hundred seventeen million, seven hundred seventy-seven thousand, seven hundred seventy".