1281235081232 has 20 divisors (see below), whose sum is σ = 2613045232080. Its totient is φ = 606900827808.

The previous prime is 1281235081223. The next prime is 1281235081297. The reversal of 1281235081232 is 2321805321821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2107294238 + ... + 2107294845.

It is an arithmetic number, because the mean of its divisors is an integer number (130652261604).

Almost surely, 2^{1281235081232} is an apocalyptic number.

It is an amenable number.

1281235081232 is an abundant number, since it is smaller than the sum of its proper divisors (1331810150848).

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

1281235081232 is a wasteful number, since it uses less digits than its factorization.

1281235081232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4214589110 (or 4214589104 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 1281235081232 in words is "one trillion, two hundred eighty-one billion, two hundred thirty-five million, eighty-one thousand, two hundred thirty-two".