1281038422144 has 64 divisors (see below), whose sum is σ = 2748729896640. Its totient is φ = 591173600256.

The previous prime is 1281038422133. The next prime is 1281038422171. The reversal of 1281038422144 is 4412248301821.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 1281038422097 and 1281038422106.

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, 14370799 + ... + 14459665.

It is an arithmetic number, because the mean of its divisors is an integer number (42948904635).

Almost surely, 2^{1281038422144} is an apocalyptic number.

It is an amenable number.

1281038422144 is an abundant number, since it is smaller than the sum of its proper divisors (1467691474496).

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

1281038422144 is an equidigital number, since it uses as much as digits as its factorization.

1281038422144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97557 (or 97545 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The spelling of 1281038422144 in words is "one trillion, two hundred eighty-one billion, thirty-eight million, four hundred twenty-two thousand, one hundred forty-four".