12677841745 has 16 divisors (see below), whose sum is σ = 15428742480. Its totient is φ = 9998843904.

The previous prime is 12677841739. The next prime is 12677841769. The reversal of 12677841745 is 54714877621.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1183428801 + 11494412944 = 34401^2 + 107212^2 .

It is a cyclic number.

It is not a de Polignac number, because 12677841745 - 2⁹ = 12677841233 is a prime.

It is a super-2 number, since 2×12677841745² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12677841692 and 12677841701.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 975027 + ... + 987943.

It is an arithmetic number, because the mean of its divisors is an integer number (964296405).

Almost surely, 2^12677841745 is an apocalyptic number.

It is an amenable number.

12677841745 is a deficient number, since it is larger than the sum of its proper divisors (2750900735).

12677841745 is a wasteful number, since it uses less digits than its factorization.

12677841745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15684.

The product of its digits is 2634240, while the sum is 52.

The spelling of 12677841745 in words is "twelve billion, six hundred seventy-seven million, eight hundred forty-one thousand, seven hundred forty-five".