1281988370003 has 4 divisors (see below), whose sum is σ = 1398532767288. Its totient is φ = 1165443972720.

The previous prime is 1281988369997. The next prime is 1281988370017. The reversal of 1281988370003 is 3000738891821.

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

It is a cyclic number.

It is not a de Polignac number, because 1281988370003 - 2¹⁰ = 1281988368979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1281988370093) 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, 58272198626 + ... + 58272198647.

It is an arithmetic number, because the mean of its divisors is an integer number (349633191822).

Almost surely, 2^{1281988370003} is an apocalyptic number.

1281988370003 is a deficient number, since it is larger than the sum of its proper divisors (116544397285).

1281988370003 is a wasteful number, since it uses less digits than its factorization.

1281988370003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116544397284.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 1281988370003 in words is "one trillion, two hundred eighty-one billion, nine hundred eighty-eight million, three hundred seventy thousand, three".