1283026382781 has 32 divisors (see below), whose sum is σ = 2012517935232. Its totient is φ = 716797589760.

The previous prime is 1283026382777. The next prime is 1283026382791. The reversal of 1283026382781 is 1872836203821.

It is not a de Polignac number, because 1283026382781 - 2² = 1283026382777 is a prime.

It is a super-2 number, since 2×1283026382781² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283026382741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1725610 + ... + 2354523.

It is an arithmetic number, because the mean of its divisors is an integer number (62891185476).

Almost surely, 2^{1283026382781} is an apocalyptic number.

1283026382781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1283026382781 is a deficient number, since it is larger than the sum of its proper divisors (729491552451).

1283026382781 is a wasteful number, since it uses less digits than its factorization.

1283026382781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080893.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 1283026382781 in words is "one trillion, two hundred eighty-three billion, twenty-six million, three hundred eighty-two thousand, seven hundred eighty-one".