1281255076326 has 16 divisors (see below), whose sum is σ = 2622103412544. Its totient is φ = 417152815464.

The previous prime is 1281255076301. The next prime is 1281255076391. The reversal of 1281255076326 is 6236705521821.

It is a super-2 number, since 2×1281255076326² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2483052216 + ... + 2483052731.

It is an arithmetic number, because the mean of its divisors is an integer number (163881463284).

Almost surely, 2^{1281255076326} is an apocalyptic number.

1281255076326 is an abundant number, since it is smaller than the sum of its proper divisors (1340848336218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1281255076326 is a wasteful number, since it uses less digits than its factorization.

1281255076326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966104995.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 1281255076326 in words is "one trillion, two hundred eighty-one billion, two hundred fifty-five million, seventy-six thousand, three hundred twenty-six".