1285273487378 has 16 divisors (see below), whose sum is σ = 1929726391680. Its totient is φ = 642031462800.

The previous prime is 1285273487347. The next prime is 1285273487389. The reversal of 1285273487378 is 8737843725821.

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, 34558733 + ... + 34595903.

It is an arithmetic number, because the mean of its divisors is an integer number (120607899480).

Almost surely, 2^{1285273487378} is an apocalyptic number.

1285273487378 is a deficient number, since it is larger than the sum of its proper divisors (644452904302).

1285273487378 is a wasteful number, since it uses less digits than its factorization.

1285273487378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52993.

The product of its digits is 126443520, while the sum is 65.

The spelling of 1285273487378 in words is "one trillion, two hundred eighty-five billion, two hundred seventy-three million, four hundred eighty-seven thousand, three hundred seventy-eight".