1243082606881 has 8 divisors (see below), whose sum is σ = 1276770050984. Its totient is φ = 1209399932160.

The previous prime is 1243082606867. The next prime is 1243082606911. The reversal of 1243082606881 is 1886062803421.

It can be written as a sum of positive squares in 4 ways, for example, as 610804771600 + 632277835281 = 781540^2 + 795159^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1243082606881 - 2²¹ = 1243080509729 is a prime.

It is a super-2 number, since 2×1243082606881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243082606081) 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, 660840 + ... + 1709641.

It is an arithmetic number, because the mean of its divisors is an integer number (159596256373).

Almost surely, 2^{1243082606881} is an apocalyptic number.

It is an amenable number.

1243082606881 is a deficient number, since it is larger than the sum of its proper divisors (33687444103).

1243082606881 is a wasteful number, since it uses less digits than its factorization.

1243082606881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384691.

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 1243082606881 in words is "one trillion, two hundred forty-three billion, eighty-two million, six hundred six thousand, eight hundred eighty-one".