12677733777621 has 16 divisors (see below), whose sum is σ = 18447894577728. Its totient is φ = 7680327292800.

The previous prime is 12677733777601. The next prime is 12677733777679.

12677733777621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12677733777621 - 2⁹ = 12677733777109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12677733777601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78611326 + ... + 78772431.

It is an arithmetic number, because the mean of its divisors is an integer number (1152993411108).

Almost surely, 2^{12677733777621} is an apocalyptic number.

12677733777621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12677733777621 is a deficient number, since it is larger than the sum of its proper divisors (5770160800107).

12677733777621 is a wasteful number, since it uses less digits than its factorization.

12677733777621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157386212.

The product of its digits is 152473104, while the sum is 66.

The spelling of 12677733777621 in words is "twelve trillion, six hundred seventy-seven billion, seven hundred thirty-three million, seven hundred seventy-seven thousand, six hundred twenty-one".