1481140787281 has 4 divisors (see below), whose sum is σ = 1481149067364. Its totient is φ = 1481132507200.

The previous prime is 1481140787261. The next prime is 1481140787363. The reversal of 1481140787281 is 1827870411841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1242313097281 + 238827690000 = 1114591^2 + 488700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1481140787281 - 2¹⁷ = 1481140656209 is a prime.

It is a super-2 number, since 2×1481140787281² (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 (1481140787251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3865660 + ... + 4231501.

It is an arithmetic number, because the mean of its divisors is an integer number (370287266841).

Almost surely, 2^{1481140787281} is an apocalyptic number.

It is an amenable number.

1481140787281 is a deficient number, since it is larger than the sum of its proper divisors (8280083).

1481140787281 is an equidigital number, since it uses as much as digits as its factorization.

1481140787281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280082.

The product of its (nonzero) digits is 802816, while the sum is 52.

The spelling of 1481140787281 in words is "one trillion, four hundred eighty-one billion, one hundred forty million, seven hundred eighty-seven thousand, two hundred eighty-one".