1285208071057 has 4 divisors (see below), whose sum is σ = 1295327819776. Its totient is φ = 1275088322340.

The previous prime is 1285208070977. The next prime is 1285208071061. The reversal of 1285208071057 is 7501708025821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1285208071057 - 2⁷ = 1285208070929 is a prime.

It is a super-2 number, since 2×1285208071057² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1285208070998 and 1285208071016.

It is not an unprimeable number, because it can be changed into a prime (1285208071457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5059874169 + ... + 5059874422.

It is an arithmetic number, because the mean of its divisors is an integer number (323831954944).

Almost surely, 2^{1285208071057} is an apocalyptic number.

It is an amenable number.

1285208071057 is a deficient number, since it is larger than the sum of its proper divisors (10119748719).

1285208071057 is a wasteful number, since it uses less digits than its factorization.

1285208071057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10119748718.

The product of its (nonzero) digits is 313600, while the sum is 46.

The spelling of 1285208071057 in words is "one trillion, two hundred eighty-five billion, two hundred eight million, seventy-one thousand, fifty-seven".