1285880012065 has 16 divisors (see below), whose sum is σ = 1683865249920. Its totient is φ = 934890232320.

The previous prime is 1285880012057. The next prime is 1285880012077. The reversal of 1285880012065 is 5602100885821.

It is not a de Polignac number, because 1285880012065 - 2³ = 1285880012057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3514509 + ... + 3863098.

It is an arithmetic number, because the mean of its divisors is an integer number (105241578120).

Almost surely, 2^{1285880012065} is an apocalyptic number.

It is an amenable number.

1285880012065 is a deficient number, since it is larger than the sum of its proper divisors (397985237855).

1285880012065 is a wasteful number, since it uses less digits than its factorization.

1285880012065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380792.

The product of its (nonzero) digits is 307200, while the sum is 46.

Adding to 1285880012065 its reverse (5602100885821), we get a palindrome (6887980897886).

The spelling of 1285880012065 in words is "one trillion, two hundred eighty-five billion, eight hundred eighty million, twelve thousand, sixty-five".