1281066706677 has 8 divisors (see below), whose sum is σ = 1708495550080. Its totient is φ = 853841167200.

The previous prime is 1281066706657. The next prime is 1281066706691. The reversal of 1281066706677 is 7766076601821.

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

It is not a de Polignac number, because 1281066706677 - 2¹⁸ = 1281066444533 is a prime.

It is a super-2 number, since 2×1281066706677² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281066706627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50811277 + ... + 50836482.

It is an arithmetic number, because the mean of its divisors is an integer number (213561943760).

Almost surely, 2^{1281066706677} is an apocalyptic number.

It is an amenable number.

1281066706677 is a deficient number, since it is larger than the sum of its proper divisors (427428843403).

1281066706677 is a wasteful number, since it uses less digits than its factorization.

1281066706677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101651963.

The product of its (nonzero) digits is 7112448, while the sum is 57.

The spelling of 1281066706677 in words is "one trillion, two hundred eighty-one billion, sixty-six million, seven hundred six thousand, six hundred seventy-seven".