1285273487377 has 12 divisors (see below), whose sum is σ = 1414098474880. Its totient is φ = 1167305756760.

The previous prime is 1285273487347. The next prime is 1285273487389. The reversal of 1285273487377 is 7737843725821.

It is a happy number.

It is not a de Polignac number, because 1285273487377 - 2¹⁵ = 1285273454609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1285273487347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4985973 + ... + 5237410.

Almost surely, 2^{1285273487377} is an apocalyptic number.

It is an amenable number.

1285273487377 is a deficient number, since it is larger than the sum of its proper divisors (128824987503).

1285273487377 is a wasteful number, since it uses less digits than its factorization.

1285273487377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10224444 (or 10224433 counting only the distinct ones).

The product of its digits is 110638080, while the sum is 64.

The spelling of 1285273487377 in words is "one trillion, two hundred eighty-five billion, two hundred seventy-three million, four hundred eighty-seven thousand, three hundred seventy-seven".