1283523257872 has 10 divisors (see below), whose sum is σ = 2486826312158. Its totient is φ = 641761628928.

The previous prime is 1283523257857. The next prime is 1283523257873. The reversal of 1283523257872 is 2787523253821.

It can be written as a sum of positive squares in only one way, i.e., 1109053309456 + 174469948416 = 1053116^2 + 417696^2 .

It is not an unprimeable number, because it can be changed into a prime (1283523257873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40110101793 + ... + 40110101824.

Almost surely, 2^{1283523257872} is an apocalyptic number.

It is an amenable number.

1283523257872 is a deficient number, since it is larger than the sum of its proper divisors (1203303054286).

1283523257872 is an equidigital number, since it uses as much as digits as its factorization.

1283523257872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80220203625 (or 80220203619 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 55.

The spelling of 1283523257872 in words is "one trillion, two hundred eighty-three billion, five hundred twenty-three million, two hundred fifty-seven thousand, eight hundred seventy-two".